WO2019047969A1 - 一种随机接入方法和设备 - Google Patents
一种随机接入方法和设备 Download PDFInfo
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- WO2019047969A1 WO2019047969A1 PCT/CN2018/105005 CN2018105005W WO2019047969A1 WO 2019047969 A1 WO2019047969 A1 WO 2019047969A1 CN 2018105005 W CN2018105005 W CN 2018105005W WO 2019047969 A1 WO2019047969 A1 WO 2019047969A1
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- random access
- user equipment
- network device
- power
- backoff
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
Definitions
- the present application relates to communication technologies, and in particular, to a random access method and device.
- the initial access system of the user equipment includes three main important steps: (1) initial synchronization and cell search process; and (2) network transmission basic system. Information; (3) random access process.
- the user equipment may obtain downlink coarse time synchronization and coarse frequency synchronization according to a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), and further obtain symbol synchronization and frame synchronization. And obtaining information such as a cyclic prefix and a cell ID.
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- step (2) the system sends a basic system message, that is, a system information block (SIB) message, and the user equipment receives the basic system message (SIB message) and reads the basic information.
- SIB system information block
- step (3) the user equipment obtains uplink random access according to basic system information provided by the system. Enter the resource configuration information and perform the uplink random access procedure.
- the contention-based random access procedure still adopts a method similar to the traditional LTE system for transmitting four messages, that is, the user equipment sends a preamble sequence, and the network device feeds back random access.
- Response (RAR,) the user equipment sends a Message 3 message, and the network device replies to the message 4 to perform contention resolution, thereby completing the final uplink random access procedure;
- FIG. 1 is a schematic flowchart of a contention-based random access method in LTE.
- a UE in the random access mode, a UE sends a random access preamble to a base station, and sends a base station (eNodeB, The eNB has a request for random access while enabling the eNB to estimate the transmission delay with the UE and thereby calibrate the timing advance (TA).
- TA timing advance
- each UE sends a third message in the RA process, where the information includes the unique identifier of the UE, that is, the unique identifier of each UE is different.
- the eNB informs which UE or UEs to contend for the channel success by replying to the unique identifier of the UE in the third message in the Physical Random Access Channel (PRACH) process.
- PRACH Physical Random Access Channel
- a user equipment In a wireless communication system such as LTE or 5G NR, a user equipment (User Equipment, UE) needs to enter an RRC connected state from a radio resource control (RRC) idle state (or inactice state) through random access, and can perform a base station with a base station.
- RRC radio resource control
- Various bearers are established, and some necessary resources and parameter configurations are obtained to communicate with the base station.
- the present application provides a random access method and device, and provides a backoff technique for a user equipment in an NR system.
- the application provides a random access method, where the method includes:
- the user equipment receives the random access configuration information sent by the network device;
- the random access configuration information includes a BI adjustment parameter and/or a power parameter corresponding to the at least one random access procedure situation;
- the user equipment when performing the first random access procedure, according to the received BI and the first BI adjustment parameter and/or the first power parameter corresponding to the first random access procedure, to the network device Send random access preamble signals for random access.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase transmit power.
- the method further includes:
- the user equipment adjusts the first BI adjustment parameter according to the received BI and the first random access procedure situation. And/or the first power parameter, the random access preamble signal is sent again to the network device for random access.
- the sending according to the received BI and the first BI adjustment parameter and/or the first power parameter corresponding to the first random access procedure, a random access preamble signal to the network device Perform random access, including:
- the user equipment sets a backoff parameter according to the received BI and the first BI adjustment parameter, and selects a backoff time according to the backoff parameter, and waits for the backoff time to send a random access preamble to the network device. Signals are randomly accessed;
- the user equipment increases the transmit power according to the first power parameter, and sends a random access preamble signal to the network device according to the increased transmit power to perform random access;
- the user equipment sets a backoff parameter according to the receiving the BI and the first BI adjustment parameter, and selects a backoff time according to the backoff parameter, and increases a transmit power according to the first power parameter, after waiting for the backoff time Sending a random access preamble signal to the network device according to the increased transmit power for random access.
- increasing the transmit power according to the first power parameter includes:
- the transmit power is increased according to the first power ramp step.
- the method further includes:
- the user equipment When the user equipment performs the second random access procedure, and the random access configuration information does not include the BI adjustment parameter and/or the power parameter corresponding to the second random access procedure, the user equipment Setting a backoff parameter according to the received BI, selecting a backoff time based on the backoff parameter, and/or, after the backoff time, and/or according to the received (or pre-stored) power ramping step increasing transmission power, The user equipment sends a random access preamble signal to the network device for random access.
- the application provides a random access method, including:
- the user equipment receives the random access configuration information sent by the network device;
- the random access configuration information includes a BI adjustment parameter and/or a power parameter corresponding to at least two random access process situations;
- the first power parameter is configured to send a random access preamble signal to the network device for random access; or send a random access preamble signal to the network device according to the received BI and the power ramp step to perform random access.
- the sending the random access preamble signal to the network device according to the received BI and the power ramp step to perform random access including:
- the user equipment sets a backoff parameter according to the received BI, and selects a backoff time according to the backoff parameter, and waits for the backoff time to send a random access preamble signal to the network device for random access;
- the user equipment increases the transmission power according to the received power stepping step, and sends a random access preamble signal to the network device according to the increased transmission power to perform random access;
- the user equipment sets a backoff parameter according to the received BI, and selects a backoff time according to the backoff parameter, and increases a transmission power according to the received power stepping step, after waiting for the backoff time, according to the added
- the transmit power sends a random access preamble signal to the network device for random access.
- the BI is a BI recorded when the second random access procedure is performed.
- the application provides a random access method, including:
- the network device configures corresponding BI adjustment parameters and/or power parameters for different random access process conditions
- the network device sends random access configuration information, where the random access configuration information includes a BI adjustment parameter and/or a power parameter corresponding to at least one random access procedure situation.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the network device configures a second BI adjustment parameter and/or a second power parameter, where the second power parameter includes a second power adjustment parameter or a second power. Climbing step size.
- the second random access procedure is different from the first random access procedure, where the first BI adjustment parameter is different from the second BI adjustment parameter; the second power adjustment parameter is different from the first power adjustment parameter.
- the second power ramp step is different from the first power ramp step.
- the application provides a random access method, including:
- the user equipment selects the first SSB sent by the network device, and sends a random access preamble signal to the network device;
- the user equipment receives a random access response returned by the network device;
- the random access response includes a first backoff indication BI and/or a first power ramp step corresponding to the first SSB;
- the user equipment is directed to the network device according to the first backoff indication BI and/or the first power ramp step
- the random access preamble signal is sent again for random access.
- the user equipment selects the pre-configured first synchronization signal block SSB to send a random access preamble signal to the network device, including:
- the user equipment sends the random access preamble signal to the network device by using a PRACH resource corresponding to the first SSB.
- the user equipment sends a random access preamble signal to the network device to perform random access according to the first backoff indication BI and/or the first power ramp step, including:
- the user equipment selects a backoff time based on the BI, and sends a random access preamble to the network device to perform random access after waiting for the backward time;
- the user equipment increases the transmit power based on the first power ramp step, and sends a random access preamble to the network device to perform random access according to the increased transmit power.
- the user equipment selects a backoff time based on the BI, and increases a transmit power based on the first power ramp step, and sends a random access to the network device according to the increased transmit power after waiting for the backward time.
- the preamble signal is randomly accessed.
- the method further includes:
- the user equipment selects the second SSB to send a random access preamble signal to the network device;
- the random access response includes a second BI and/or a second power ramp step corresponding to the second SSB;
- the user equipment resends to the network device according to the second BI and/or the second power ramp step
- the random access preamble is randomly accessed.
- the user equipment selects the second SSB to send a random access preamble signal to the network device, including:
- the user equipment selects the PRACH resource corresponding to the second SSB to send a random access preamble signal to the network device.
- the network device uses the first transmit beam to correspond to the first SSB, and the network device uses the second transmit beam to correspond to the second SSB.
- the number of user equipments covered by the first transmit beam is different from the number of users covered by the second transmit beam.
- the application provides a random access method, including:
- the network device receives the random access preamble signal sent by the user equipment, and identifies that the user equipment selects the first SSB;
- the network device returns a random access response to the user equipment; the random access response includes a first backoff indication BI and/or a first power ramp step corresponding to the first SSB.
- the network device receives a random access preamble signal sent by the user equipment by using the first synchronization signal block SSB, including:
- the network device receives the random access preamble signal sent by the user equipment by using a PRACH resource corresponding to the first SSB.
- the method further includes:
- the network device receives the random access preamble signal sent by the user equipment, and identifies that the user equipment selects the second SSB;
- the network device returns a random access response to the user equipment according to the random access preamble signal; the random access response includes a second BI and/or a second power stepping step corresponding to the second SSB long.
- the network device receives the random access preamble signal sent by the user equipment by using a PRACH resource corresponding to the second SSB.
- the network device uses the first transmit beam to correspond to the first SSB.
- the network device uses the second sending beam to correspond to the second SSB.
- the number of user equipments covered by the first transmit beam is different from the number of users covered by the second transmit beam.
- the application provides a random access method, including:
- the user equipment sends a random access preamble signal to the network device by using the first transmission beam and/or the first random access resource, where the random access preamble signal is used to initiate a random access procedure;
- the user equipment performs any one of the following scenarios in the case that the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed:
- Solution A If the current used beam of the user equipment is the first transmission beam, or the user equipment currently uses the first random access resource, or if the power ramp of the user equipment is randomly connected The first user equipment selects a random backoff time based on the backoff parameter if the inbound response message is considered to be a failure or the conflict resolution is considered to have failed. After waiting for the random backoff time, the user equipment initiates a random access procedure to the network device again;
- Scenario B If the beam currently used by the user equipment is the second transmission beam, or the user equipment currently uses the second random access resource, or if the power ramp of the user equipment is in the random access response The message receiving is considered to be a failure or the conflict resolution is considered to have failed after the failure, or if the power ramp of the user equipment is reset, the user equipment sets the backoff parameter to 0;
- Scenario C If the transmit power of the user equipment reaches a maximum value and the beam currently used by the user equipment is the second transmit beam, the user equipment selects a random backoff time based on the backoff parameter, and waits for the random backoff After the time, the user equipment initiates a random access procedure to the network device again;
- Scenario D If the power ramp-up counter of the user equipment changes after the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed, and the beam currently used by the user equipment is the first transmission beam, Or if the power ramp-up counter of the user equipment changes after the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed and the beam currently used by the user equipment is the second transmission beam, The user equipment selects a random backoff time based on the backoff parameter, and after waiting for the random backoff time, the user equipment initiates a random access procedure to the network device again;
- Solution E if the power ramp-up counter of the user equipment does not change after the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed, and the beam currently used by the user equipment is the second transmission beam, then The user equipment sets the backoff parameter to 0;
- the F If the power ramp of the user equipment is reset and the beam currently used by the user equipment is the second transmission beam, the user equipment sets the backoff parameter to 0;
- Scenario G If the beam currently used by the user equipment is a second transmission beam, and the second transmission beam is a transmission beam used by the user equipment, the user equipment selects a random based on the backoff parameter. After the backoff time, waiting for the random backoff time, the user equipment initiates a random access procedure to the network device again;
- Solution H The user equipment maintains a counter for the first transmission beam, the user equipment sends a pilot by using the first transmission beam, the counter is incremented by 1, and the user equipment determines that the counter does not When the maximum value is reached, the first user equipment sets the backoff parameter to 0;
- the user equipment maintains a counter for the first transmission beam, and the user equipment determines that the counter reaches a maximum value, the user equipment selects a random backoff time based on the backoff parameter, waiting for the After the random backoff time, the user equipment initiates a random access procedure to the network device again.
- the method further includes:
- the user equipment is used as the first transmission beam after the random access response message receives a packet that is considered to be failed or the collision resolution is considered to be a failure;
- the user equipment uses the random access resource as the first random access resource after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the beam currently used by the user equipment is a second transmission beam, or the user equipment currently uses the second random access resource, where the method further includes:
- the user equipment is used as a second transmission beam after the random access response message receives a packet that is considered to be failed or the collision resolution is considered to be a failure;
- the user equipment uses the random access resource as the second random access resource after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the sending power of the user equipment reaches a maximum value
- the user equipment reaches a maximum value of the sending power of the first user equipment after the random access response message is deemed to be failed or the conflict resolution is considered to be a failure.
- the power ramp-up counter of the first user equipment is reset, and the user equipment power hill-climbing counter of the user equipment after the random access response message is received as a failure or the conflict resolution is considered to be a failure.
- the application provides a user equipment, where the user equipment includes: a receiving module, a processing module, and a sending module;
- the receiving module is configured to receive random access configuration information that is sent by the network device, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation;
- the sending module is configured to: when the processing module performs the first random access procedure, according to the received backoff indication BI and the first BI adjustment parameter corresponding to the first random access procedure situation, and/or the first The power parameter sends a random access preamble signal to the network device for random access.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the receiving module is further configured to receive a random access response message returned by the network device;
- the processing module is further configured to: according to the received backoff indication BI and the first random access procedure, in the case that the random access response message is deemed to be failed, or the conflict resolution is considered to be a failure.
- the first BI adjustment parameter and/or the first power parameter are used by the sending module to resend the random access preamble signal to the network device for random access.
- processing module is specifically configured to:
- the processing module is further configured to: set a backoff parameter according to the received BI, select a backoff time based on the backoff parameter, and/or, after the backoff time, and/or, according to the received power, the increased power of the stepping step, And transmitting, by the sending module, a random access preamble signal to the network device for random access.
- the application provides a user equipment, including: a receiving module, a processing module, and a sending module;
- the receiving module is configured to receive the random access configuration information sent by the network device, where the random access configuration information includes at least two backoff indication BI adjustment parameters and/or power parameters corresponding to the random access procedure situation;
- the processing module is configured according to the received backoff indication BI and the first corresponding to the first random access procedure. a BI adjustment parameter and/or a first power parameter, where the sending module sends a random access preamble signal to the network device for random access; or the processing module passes the received BI and the power stepping step The sending module sends a random access preamble signal to the network device for random access.
- processing module is specifically configured to:
- the sending module sends a random access preamble signal to the network device for random access.
- the application provides a network device, including:
- a processing module configured to configure a corresponding backoff indication BI adjustment parameter and/or a power parameter for different random access process conditions
- a sending module configured to send random access configuration information, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the application provides a user equipment, including:
- a sending module configured to select a first SSB sent by the network device, and send a random access preamble signal to the network device;
- a receiving module configured to receive a random access response returned by the network device, where the random access response includes a first backoff indication BI and/or a first power ramp step corresponding to the first SSB;
- a processing module configured to send, by the sending module, the first BI and/or the first power ramp step according to the first BI and/or the first power ramp step if the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure
- the network device sends the random access preamble again for random access.
- the sending module is specifically configured to send the random access preamble signal to the network device by using a PRACH resource corresponding to the first SSB.
- processing module is specifically configured to:
- the application provides a network device, including:
- a receiving module configured to receive a random access preamble signal sent by the user equipment, and identify that the user equipment selects the first SSB;
- a sending module configured to return a random access response to the user equipment according to the random access preamble signal; the random access response includes a first backoff indication BI and/or a first power corresponding to the first SSB Climbing step size.
- the receiving module is specifically configured to receive the random access preamble signal sent by the user equipment by using a PRACH resource corresponding to the first SSB.
- the application provides a user equipment, the method comprising: a receiver, a processor, a transmitter, and a memory, where the memory is used to store a computer program;
- the receiver is configured to receive random access configuration information that is sent by the network device, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation;
- the transmitter is configured to: when the processor performs the first random access procedure, according to the received BI and the first BI adjustment parameter and/or the first power parameter corresponding to the first random access procedure situation, Sending a random access preamble signal to the network device for random access.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the receiver is further configured to receive a random access response message returned by the network device;
- the processor is further configured to: according to the received backoff indication BI and the first random access procedure situation The first BI adjustment parameter and/or the first power parameter are used by the transmitter to retransmit the random access preamble signal to the network device for random access.
- the processor is specifically configured to:
- the processor is further configured to: set a backoff parameter according to the received BI, select a backoff time based on the backoff parameter, and/or, after the backoff time, and/or, according to the received power, the increased power of the stepping step, And transmitting, by the transmitter, a random access preamble signal to the network device for random access.
- the application provides a user equipment, including: a receiver, a processor, a transmitter, and a memory, where the memory is used to store a computer program;
- the receiver is configured to receive random access configuration information that is sent by the network device, where the random access configuration information includes at least two backoff indication BI adjustment parameters and/or power parameters corresponding to the random access procedure situation;
- the processor When the user equipment changes from performing the second random access procedure to performing the first random access procedure, the processor is configured according to the received backoff indication BI and the first corresponding to the first random access procedure. a BI adjustment parameter and/or a first power parameter, by which the random access preamble signal is sent to the network device for random access; or the processor passes the received BI and the power stepping step The transmitter sends a random access preamble signal to the network device for random access.
- the processor is specifically configured to:
- the transmitter sends a random access preamble signal to the network device for random access.
- the application provides a network device, including: a memory for storing a computer program
- a processor configured to configure a corresponding backoff indication BI adjustment parameter and/or a power parameter for different random access process conditions
- a transmitter configured to send random access configuration information, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the application provides a user equipment, including: a memory for storing a computer program;
- a transmitter configured to select a first SSB sent by the network device to send a random access preamble signal to the network device
- a receiver configured to receive a random access response returned by the network device, where the random access response includes a first backoff indication BI and/or a first power ramp step corresponding to the first SSB;
- a processor configured to pass, according to the first backoff indication BI and/or the first power ramp step, in the case that the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure
- the transmitter again sends a random access preamble signal to the network device for random access.
- the transmitter is specifically configured to send the random access preamble signal to the network device by using a PRACH resource corresponding to the first SSB.
- the processor is specifically configured to:
- the application provides a network device, including: a memory for storing a computer program
- a receiver configured to receive a random access preamble signal sent by the user equipment, and identify that the user equipment selects the first SSB;
- a transmitter configured to return a random access response to the user equipment, where the random access response includes a first backoff indication BI and/or a first power ramp step corresponding to the first SSB.
- the receiver is specifically configured to receive the random access preamble signal sent by the user equipment by using a PRACH resource corresponding to the first SSB.
- the present application provides a storage medium for storing a computer program for implementing the random access method provided by any one of the first aspects.
- the present application provides a storage medium for storing a computer program for implementing the random access method provided by any one of the second aspects.
- the present application provides a storage medium for storing a computer program, the computer program for implementing the random access method provided by any one of the third aspects.
- the present application provides a storage medium for storing a computer program for implementing the random access method provided in any one of the fourth aspects.
- the present application provides a storage medium for storing a computer program, the computer program for implementing the random access method provided in any one of the fifth aspects.
- the network device configures different BI adjustment parameters and/or power parameters for different situations in which the user equipment performs a random access procedure, and when the user performs a certain random access procedure, for example,
- the first random access procedure may send a random access preamble signal to the network device according to the received BI and the first BI adjustment parameter and the first power parameter corresponding to the first random access procedure, and perform a random access process. That is, the user equipment may select the corresponding BI adjustment parameter to adjust the backoff parameter and the transmit power according to different random access process conditions, thereby speeding up the completion of random access and reducing interference to the network.
- 1 is a schematic flowchart of a contention-based random access method in LTE
- FIG. 2 is a schematic structural diagram of a wireless communication system provided by the present application.
- FIG. 3 is a schematic diagram of connection between a network device and a user equipment provided by the present application.
- FIG. 4 is a schematic structural diagram of a user equipment provided by the present application.
- FIG. 5 is a schematic structural diagram of a network device provided by the present application.
- FIG. 6 is a flowchart of Embodiment 1 of a random access method provided by the present application.
- FIG. 7 is a flowchart of Embodiment 2 of a random access method provided by the present application.
- FIG. 8 is a flowchart of Embodiment 3 of a random access method provided by the present application.
- FIG. 9 is a schematic structural diagram of Embodiment 1 of a user equipment provided by the present application.
- FIG. 10 is a schematic structural diagram of Embodiment 1 of a network device according to the present application.
- FIG. 11 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present application.
- FIG. 12 is a schematic structural diagram of Embodiment 2 of a network device according to the present application.
- the random access scheme provided by the present application can be applied to a wireless communication system, such as a New Radio (NR) scenario, a Long Term Evolution (LTE) next-generation scenario, and a Wireless Local Area Networks (WLAN). Scenes, Bluetooth communication, etc.
- a wireless communication system such as a New Radio (NR) scenario, a Long Term Evolution (LTE) next-generation scenario, and a Wireless Local Area Networks (WLAN). Scenes, Bluetooth communication, etc.
- NR New Radio
- LTE Long Term Evolution
- WLAN Wireless Local Area Networks
- Scenes Bluetooth communication
- the embodiment of the present application takes a new air interface scenario as an example for description.
- 2 is a schematic structural diagram of a wireless communication system provided by the present application. As shown in FIG.
- a core network of a new air interface may be included in an NR scenario, such as a new radio new redio access technology core network (New Radio new redio access technology) Core, NR_newRAT-Core), the access network of the new air interface, wherein the functional entities are mainly network devices, and user equipments connected to the network devices in the new air interface access network, such as the user equipment 1 shown in FIG. 2, more
- the relay device and the user device connected to the relay such as the user device 2 shown in FIG. 2, may also be included.
- the relay device and the network device establish a connection through the link 2, so the relay device can also be regarded as a user device with respect to the network device; the relay device establishes a connection with the user device 2 through the link 3, and thus is relative to the user device.
- the relay device can also be regarded as a network device. Therefore, those skilled in the art can understand that the network device of the present invention may also include a relay device, and the user equipment of the present invention may also include a relay device.
- the network device may be specifically a gNB, a new radio eNB, a transmission and reception point (TRP), a macro base station, a micro base station, a high frequency base station, an LTE macro or micro eNB, a CPE, a WLAN AP, Any combination of the WLAN GO or the like, for example, the network device may be a gNB, and the gNB performs the functions involved in the network device in the present invention, or the network device is a combination of the gNB and the TRP, such as
- the resource configuration function of the network device in the present invention is completed by the gNB, and the function of transmitting and receiving the network device in the present invention is completed by the TRP, and the present invention is not limited thereto.
- the user equipment may be a mobile phone, a tablet, a smart car, a sensing device, an Internet of Things (IOT) device, a Customer Premise Equipment (CPE), or the like, a relay base station, or the like.
- IOT Internet
- the network device can form multiple transmission beams or receive beams by using Beamforming technology, such as Digital Beamforming or Analog Beamforming, and each beam is covered.
- Beamforming technology such as Digital Beamforming or Analog Beamforming
- the angles of the beams may be the same or different.
- the beams of different coverage angles may overlap.
- the network device may send control information by using a beam with a wide coverage angle, and transmit data information by using a beam with a narrow coverage angle.
- the user equipment may receive information transmitted by the network device within the coverage of one or more of the beams or beam sets or beam sets.
- the user equipment may also form a plurality of receive beams by Beamforming technology, and corresponding to the downlink beams used by the network devices, determine to use one or more receive beams to receive.
- the beams involved in the embodiments of the present invention may refer to single or multiple beams.
- the downlink transmission beam of the network device and the corresponding receiving beam of the user equipment, or the uplink transmission beam of the user equipment and the receiving beam of the corresponding network device may be referred to as a pair of beam pairs, by the Beam.
- the transmission link formed by the pair is called a Beam Pair Link (BPL).
- BPL Beam Pair Link
- the user equipment can determine to use beam 6 as the corresponding receive beam, and beam 3 and beam 6 form a pair of BPLs.
- the corresponding receive beam or the transmit beam may be determined by the transmit beam or the receive beam.
- the present application relates to user equipment and network equipment, and the user equipment refers to, for example, a 5G UE (UE supporting the next generation mobile communication standard), or other 5G terminal equipment.
- 4 is a schematic structural diagram of a user equipment provided by the present application.
- the user equipment 100 may include: one or more transceivers 101, one or more antennas 104, one or more processors 102, and one Or a plurality of memories 103.
- the user equipment can perform the method performed by the first user equipment in any of the embodiments provided by the application.
- a network device refers to, for example, a 5G gNB (a base station in a next-generation mobile communication network), or a transmission and reception point (TRP), or a network device (such as a micro base station) of another 5G access network.
- 5 is a schematic structural diagram of a network device provided by the present application.
- the network device 200 may include: one or more transceivers 201, one or more antennas 204, one or more processors 202, one or more.
- the memory 203 further, may also include one or more other interfaces 205 (e.g., fiber optic link interfaces, Ethernet interfaces, and/or copper interfaces, etc.).
- the network device can perform the method performed by the network device in any of the embodiments provided by the present application.
- the beam may also be referred to as a beam, and the beam may be directly replaced by a beam, or the beam may be directly replaced by a beam, which is not described herein again;
- the beam may also be referred to as a direction, and the beam may be directly replaced with a direction, or the direction may be directly replaced with a beam.
- the first beam may be replaced with a first direction, and the first direction may be replaced with a first beam. No longer;
- the beam may also be referred to as a spatial resource, and the beam may be directly replaced by a spatial resource, or the spatial resource may be directly replaced by a beam, which is not described herein;
- the beam may also be referred to as a precoding vector, and the beam may be directly replaced with a precoding vector, or the precoding vector may be directly replaced with a beam, which is not described herein;
- the network device can also be called a gNB, and the network device can be directly replaced with a gNB.
- the gNB can be directly replaced with a network device, which is not described herein.
- the network device may also be referred to as a TRP, and the network device may be directly replaced with a TRP, or the TRP may be directly replaced with a network device, which is not described herein;
- the identifier information of the beam may also be referred to as the index information of the beam, and the identifier information of the beam may be directly replaced with the index information of the beam, or the index information of the beam may be directly replaced with the identifier information of the beam, which is not described herein.
- the identification information of the beam may also be referred to as beam identification information, and the identification information of the beam may be directly replaced with the beam identification information, or the beam identification information may be directly replaced with the identification information of the beam, which is not described herein.
- the beam/beam can be understood as a spatial resource, and can refer to a transmit or receive precoding vector with energy transmission directivity/directionality.
- the transmitting or receiving precoding vector can be identified by index information.
- the energy transmission directivity may be that, after receiving the precoding process by using the precoding vector, the received signal has good receiving power, such as satisfying the receiving demodulation signal to noise ratio, etc. in a certain spatial position;
- the transmission directivity may also mean that the same signal transmitted from different spatial locations is received by the precoding vector and has different receiving powers.
- the device uses different beams to indicate that the device uses different spatial resources, and optionally, further distinguishes the uplink. a spatial resource and/or a downlink space resource, or a spatial resource for transmitting information, a spatial resource for receiving information;
- the beam can be understood as a main lobe formed by the transmission mode of the antenna array, for example, the beam (of the antenna) is the main lobe of the radiation pattern of an antenna array;
- the same communication device may have different precoding vectors, and different devices may have different precoding vectors, that is, corresponding to different beams, and different beams may correspond to different directions. It can be understood that the device uses different beam to indicate that the device uses different precoding vectors, optionally, further distinguishes the uplink precoding vector, the downlink precoding vector, or distinguishes the precoding vector used to transmit the information, and is used for receiving information. Precode the vector.
- the beam/Beam can also be understood as a spatial domain transmission filter;
- the device eg, network device and/or user equipment
- the spatial domain transmission filter using a beam;
- one communication device may use one or more of a plurality of different precoding vectors at the same time, that is, one or more beams may be formed at the same time.
- the information of the beam can be identified by the index information.
- the index information may be configured to correspond to a resource identifier (ID) of the UE.
- the index information may correspond to an ID of a channel status information reference signal (CSI-RS) or
- the resource may also correspond to the ID or resource of the configured Sounding Reference Signal (SRS).
- the index information may also be index information of a signal or channel display or implicit bearer carried by the beam, for example, the index information may be a synchronization signal sent by a beam or a broadcast channel indicating the beam. Index information.
- the beam pair may include a transmission beam at the transmitting end and a receiving beam at the receiving end, or also referred to as an uplink beam or a downlink beam.
- the beam pair may include a gNB Tx beam transmission beam or a UE Rx beam reception beam, or a UE Tx beam transmission beam or a gNB Rx beam reception beam, where the transmission beam may also be understood as a transmission beam.
- the identifier information of the beam may be an ID of the beam, an ID generated based on the ID of the beam, a name of the beam, an index of the beam, an index generated by the beam-based index, a derivative value of the ID of the beam, and a derivative of the name of the beam.
- the device does not restrict the use of a certain beam (for example, the Nth beam, and N is any beam supported by the device).
- the device uses the first beam as an example.
- the device uses the first beam, which may be replaced by the device in the first direction; further, the device uses the first transmit beam, and may be replaced by the device in the first sending direction, and/or the device uses the first receive beam. Can be replaced with the device in the first receiving direction;
- the device uses the first beam (or in the first direction), and may replace the device using the first spatial resource; further, the device uses the first transmit beam, and may replace the device using the first transmit space resource, and / or, the device uses the first receive beam, and can be replaced with the first receive space resource;
- the device uses the first beam (or in the first direction), and the device may use the first antenna mode; further, the device uses the first transmit beam, and may be replaced by the device using the first transmit antenna mode, and / or, the device uses the first receive beam, which can be replaced with the first receive antenna mode;
- the device uses the first beam (or in the first direction), and the device may use the first antenna mode; further, the device uses the first transmit beam, and may be replaced by the device using the first transmit antenna mode, and / or, the device uses the first receive beam, which can be replaced with the first receive antenna mode;
- the device uses the first beam (or in the first direction), and the device may use the first antenna array mode; further, the device uses the first transmit beam, and may be replaced by the device using the first transmit antenna array mode. And/or, the device uses the first receive beam, and may be replaced with the first receive antenna array mode;
- the device uses the first beam (or in the first direction), and may be replaced by the device using the first spatial domain transmission filter;
- the device uses the first transmit beam, which may be replaced by the first spatial domain transmission filter used by the device for transmitting; and/or the device uses the first receive beam, which may be replaced by the first spatial domain used by the device for receiving Transmission filter
- the device uses the first transmit beam (or in the first direction), and the device may use the first transmit spatial domain transmission filter; and/or the device uses the first receive beam, which may be replaced by the device. a first receiving spatial domain transmission filter;
- the device uses the first beam (or in the first direction), and may replace the device using the first precoding vector; further, the device uses the first transmit beam, and may be replaced by the device using the first transmit precoding vector. And/or, the device uses the first receive beam, and may be replaced with the first receive precoding vector;
- the device uses the first beam (or in the first direction), and may replace the device with the first weight; further, the device uses the first transmit beam, and may be replaced by the device using the first transmit weight, and/or The device uses the first receive beam and can be replaced with the first receive weight;
- the device uses the first beam (or in the first direction), and may replace the device using the first parameter (such as the parameters involved in the antenna array); further, the device uses the first transmit beam, which may be replaced by the device. Using the first transmission parameter, and/or, the device uses the first receive beam, and may be replaced with the first receive parameter;
- the device uses the first beam (or in the first direction), and may replace the device using the first weighting parameter (such as different antennas in the antenna array use different parameters); further, the device uses the first transmit beam , the device may use the first transmission weighting parameter, and/or the device uses the first receiving beam, and may be replaced with the first receiving weighting parameter;
- the first weighting parameter such as different antennas in the antenna array use different parameters
- the device uses the first beam (or in the first direction), and may replace the device using the first beamforming Beamforming (; further, the device uses the first transmit beam, and may be replaced by the device using the first transmit beamforming And/or, the device uses the first receive beam and can be replaced with the first receive beamforming;
- the transmit beam (or the downlink beam) used by the network device corresponds to a CSI (CSI-RS Channel State Information Reference Signal resource indicator).
- CSI CSI-RS Channel State Information Reference Signal resource indicator
- the first sending beam corresponds to the first CRI
- the second sending beam corresponds to the second CRI
- the network device is referenced in the first channel state.
- the signal resource sends information indicating that the network device uses the first transmit beam
- the user equipment indicates the CRI of the network device, that is, indicates the transmit beam of the network device
- the UE indicates a first CRI of the network device, that is, a first transmit beam indicating the network device;
- the transmit beam (or the downlink beam) used by the network device corresponds to an SBRI (SSB, synchronization signal block resource indicator), such as the first transmit beam (or in the first direction).
- the first SBRI, the second transmit beam (or in the second direction) corresponds to the second SBCRI;
- the network device sends information in the first synchronization signal block resource, indicating that the network device uses the first transmit beam;
- the UE indicates the SBRI of the network device, that is, the sending beam of the network device is indicated.
- the UE indicates the first SBRI of the network device, that is, indicates the location.
- the transmit beam (or the downlink beam) used by the network device corresponds to an SSB index (SSB, synchronization signal block index), such as a first transmit beam (or in a first direction).
- SSB index synchronization signal block index
- An SSB index, the second transmit beam (or in the second direction) corresponds to the second SSB index;
- the network device sends information on the resource corresponding to the first SSB, indicating that the network device uses the first sending beam; optionally, the UE indicates the SSB index of the network device, that is, indicates The transmitting beam of the network device, for example, the UE indicates a first SSB index of the network device, that is, a first sending beam indicating the network device;
- the transmit beam (or the downlink beam) used by the network device corresponds to an SSB time index (SSB, synchronization signal block time index), such as the first transmit beam (or in the first direction).
- SSB synchronization signal block time index
- the second sending beam (or in the second direction) corresponds to the second SSB time index; optionally, the network device sends information on the resource corresponding to the first SSB time, indicating that the network device uses The first sending beam; optionally, the UE indicates an SSB time index of the network device, that is, indicating a sending beam of the network device, for example, the UE indicates the network device The first SSB time index, that is, the first transmit beam indicating the network device.
- the user equipment sends information to the network device, which may also be referred to as: the user equipment sends information to the network device, and the user equipment sends the information to the network device, which may be replaced by the user equipment to send information to the network device, which is not limited herein.
- the user equipment sends information to the network device, the user equipment broadcasts the information to the network device, and the user equipment multicasts the information to any one of the network devices, and the sent information is not limited, for example, it may be a preamble, the user's Identification information, user's transmission beam information, data, management information, control information request information, indication information, SRS, SR, resource information, and the like.
- the network device sends information to the user equipment, which may also be referred to as: the network device sends the information to the user equipment, and the network device sends the information to the user equipment, which may be replaced by the network device to send the information to the user equipment, which is not limited herein.
- the network device sends information to the user equipment, the network device broadcasts the information to the user equipment, and the network device multicasts information to any one of the user equipments.
- the information to be sent is not limited.
- the information may be resource information. Identification information, user's transmission beam information, data, management information, control information request information, indication information, transmission beam information, and the like.
- the first user equipment uses the preamble transmitted by the transmission beam to the network device, and the first user equipment sends a preamble to the network device, the first user equipment broadcasts the preamble to the network device, and the first user equipment multicasts the preamble to the network.
- the network device sends the first resource information to the first user equipment, where the network device sends the preamble to the first user equipment, the network device broadcasts the preamble to the first user equipment, and the network device multicasts the preamble to Any one of the first user equipments; the network device sends the information to the user equipment, where the network equipment sends the information to the user equipment corresponding to the identifier information, the identifier information used by the user equipment, and the identifier information used by the user equipment. For example, the network device sends the resource information to the user equipment, and the network device sends the resource information to the user equipment that uses the C-RNTI.
- FIG. 6 is a flowchart of a first embodiment of a random access method according to the present application. As shown in FIG. 6, the random access method provided in this embodiment is applied between a network device and a user equipment, and the specific steps of the method include:
- the network device configures corresponding BI adjustment parameters and/or power parameters for different random access process conditions.
- the network device may configure different BI adjustment parameters and or power parameters for different situations in which the user equipment performs the random access procedure, so that the user equipment can perform backoff according to different parameters in different situations, and adjust power. Random access improves the efficiency of the random access process.
- the user equipment receives the random access configuration information sent by the network device, where the random access configuration information includes a BI adjustment parameter and/or a power parameter corresponding to the at least one random access procedure.
- the network device may send the random access configuration information by using a broadcast, where the random access configuration information includes a BI adjustment parameter and/or a power parameter corresponding to at least one random access procedure situation.
- the network device broadcasts the configured random access configuration information, so that each user equipment can receive the random access configuration information.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the user equipment needs to increase the transmission power according to the recorded (or received) power ramp step and the power adjustment parameter; if the power parameter is the power ramp step, the user equipment may directly The transmit power is increased according to the power ramp step.
- the user equipment When performing the first random access procedure, the user equipment sends the random access to the network device according to the received BI and the first BI adjustment parameter and/or the first power parameter corresponding to the first random access procedure.
- the preamble signal is randomly accessed.
- the first execution of the RA is not using the backoff backoff, and the power ramping power climbs; in the case of the RA failure, the bacoff backoff is used when the RA is re-initiated, and Power ramping power climbs.
- the preamble signal may be performed according to the first BI adjustment parameter and/or the first power parameter corresponding to the first random access procedure.
- the transmission specifically, includes at least the following implementations:
- the user equipment sets a backoff parameter according to the received BI and the first BI adjustment parameter, and selects a backoff time according to the backoff parameter, and waits for the backoff time to send a random access preamble signal to the network device. Random access.
- the meaning is that, when the first random access procedure is performed, the user equipment sets a backoff parameter according to the received BI and the first BI adjustment parameter, and selects a random backoff time based on the backoff parameter. After the random backoff time, the user equipment sends a preamble preamble to the network device.
- the user equipment increases the transmit power according to the first power parameter, and sends a random access preamble signal to the network device according to the increased transmit power for random access.
- the meaning is that, when the first random access procedure is performed, the user equipment sends a preamble pilot to the network device by using the transmit power after the transmit power is increased according to the power ramp step and the first power parameter.
- the user equipment sets the backoff parameter according to the receiving BI and the first BI adjustment parameter, and selects the backoff time according to the backoff parameter, and increases the transmit power according to the first power parameter, and according to the increased transmit power after waiting for the backoff time
- the random access preamble signal is sent to the network device for random access.
- the implementation manner is a combination of the first two modes, that is, determining a backoff time according to the first BI adjustment parameter, and performing power increase according to the first power parameter, and sending a preamble pilot to the network device according to the increased transmit power after waiting for the backoff time.
- performing power increase according to the first power parameter includes at least two cases, and when the first power parameter includes the first power adjustment parameter, the user equipment needs to be based on the recorded or received power.
- the hill climb step and the first power adjustment parameter increase the transmit power.
- the user equipment may directly increase the transmit power according to the first power ramp step.
- the user equipment if the user equipment is performing the second random access procedure, and the random access configuration information does not include the BI adjustment parameter and/or power corresponding to the second random access procedure.
- the user equipment sets the backoff parameter according to the received BI, selects the backoff time based on the backoff parameter, and/or, after the backoff time, and/or according to the received power, the increased power of the stepping step, The user equipment sends a random access preamble signal to the network device for random access.
- the meaning is that the network device does not configure the second BI adjustment parameter for the user equipment to perform the second random access procedure, and/or the second power adjustment parameter or the second power ramp step, then when performing random access
- the backoff parameter may be set according to the received BI, and the user equipment selects a random backoff time based on the backoff parameter after the random backoff time waits for the random backoff time, and/or after the user equipment uses the recorded or pre-received step according to the power ramp step.
- the transmit power of the user equipment sends a preamble pilot to the network device.
- a specific implementation of the solution further includes the following process:
- the user equipment adjusts the first BI adjustment parameter according to the received backoff indication BI and the first random access procedure situation and/or Or the first power parameter, sending a random access preamble signal to the network device for random access.
- the user equipment receives the random access response message returned by the network device, and if the random access response message is successfully confirmed, the subsequent RRC connection process is performed.
- the user equipment may set a backoff parameter according to the received BI and the first BI adjustment parameter, and the user equipment selects one based on the backoff parameter. After the random backoff time waits for the random backoff time, and/or, the user equipment uses the increased transmit power according to the power ramp step and the first power adjustment parameter or uses the increased transmit according to the first power ramp step. Power, the user equipment sends a preamble pilot to the network device.
- the network device configures different BI adjustment parameters and/or power parameters for different situations in which the user equipment performs the random access procedure, and when the user performs a certain random access procedure, for example,
- the random access preamble signal may be sent to the network device according to the received BI and the first BI adjustment parameter and the first power parameter corresponding to the first random access procedure, and the random access process is performed. That is, the user equipment can select the corresponding BI adjustment parameter to adjust the backoff parameter and the transmit power according to different random access process conditions, thereby speeding up the completion of random access and reducing interference to the network.
- FIG. 7 is a flowchart of Embodiment 2 of a random access method according to the present application. As shown in FIG. 7, another implementation manner of the random access method includes the following steps:
- the network device configures corresponding BI adjustment parameters and/or power parameters for different random access process conditions.
- the network device may configure different BI adjustment parameters and or power parameters for different situations in which the user equipment performs the random access procedure, so that the user equipment can perform backoff according to different parameters in different situations, and adjust power. Random access improves the efficiency of the random access process.
- the user equipment receives the random access configuration information sent by the network device, where the random access configuration information includes a BI adjustment parameter and/or a power parameter corresponding to the at least two random access process situations.
- the network device broadcasts random access configuration information, where the random access configuration information includes BI adjustment parameters and/or power parameters corresponding to multiple random access process conditions.
- the network device broadcasts the configured random access configuration information, so that each user equipment can receive the random access configuration information.
- S203 when the user equipment changes from performing the second random access procedure to performing the first random access procedure, according to the received BI and the first BI access parameter corresponding to the first random access procedure, and/or the first The power parameter sends a random access preamble signal to the network device for random access; or, according to the received BI and the power ramp step, sends a random access preamble signal to the network device for random access.
- the first power parameter includes a first power adjustment parameter or a first power ramp step, and the first power adjustment parameter or the first power ramp step is used to increase transmit power. .
- the meaning of the solution is that, when the user equipment changes from performing the second random access procedure to the first random access procedure, the user equipment may adjust the first BI adjustment parameter according to the first random access procedure.
- the first power parameter performs backoff and power increase, and then sends a random access preamble signal, and the specific implementation manner is similar to that in the first embodiment.
- the user equipment may directly set the backoff parameter according to the BI, and select the backoff time according to the backoff parameter, and after waiting for the backoff time, and/or, according to the recorded power stepping step, increase the transmitting power, and then send the network to the network device.
- the BI is the BI recorded when the second random access procedure is performed.
- the program includes the following implementations:
- the user equipment sets a backoff parameter according to the received BI, and selects a backoff time according to the backoff parameter, and waits for the backoff time to send a random access preamble signal to the network device. Random access.
- the user equipment increases the transmit power according to the received power ramp step, and sends a random access preamble to the network device according to the increased transmit power for random access.
- the user equipment sets a backoff parameter according to the received BI, and selects a backoff time according to the backoff parameter, and increases a transmit power according to the received power stepping step, waiting for the backoff After the time, the random access preamble signal is sent to the network device according to the increased transmit power for random access.
- the user equipment may directly set the backoff parameter to 0, and/or the transmission power does not change, and directly sends a preamble to the network device for random access, which is not limited in this solution.
- the first BI adjustment parameter is different from the second BI adjustment parameter; the first power adjustment parameter is different from the second power adjustment parameter; the first power ramp step is different from the second power ramp step.
- the first BI adjustment parameter that is not configured by the network device for the user equipment to perform the first random access procedure, and/or the first power adjustment parameter or the first power ramp step .
- the user equipment sets a backoff parameter according to the BI, and the user equipment selects a random backoff time based on the backoff parameter, a random backoff time, waits after the random backoff time, and/or uses an increase according to the power stepping step.
- Power the user equipment sends a preamble to the network device; or the user equipment sets the backoff parameter to 0, and/or the transmit power does not change.
- the BI in the scheme performs the BI recorded in the case of the second random access procedure.
- the network device configures a BI adjustment parameter and/or a power adjustment parameter or a power ramp step for the user equipment to perform different random access procedure situations, and the user equipment may according to different random access procedures.
- the situation chooses to use the corresponding BI adjustment parameters to adjust the Backoff parameter and transmit power, which can speed up the completion of random access and reduce interference to the network.
- the random access (RA) is performed, and the user equipment changes the total number of times the SSB of the network device is selected to reach a preset threshold, and the user equipment changes to be sent by using the user equipment.
- the RA is performed, and the user equipment performs the RA in the case that the total number of times the beam is transmitted by the user equipment reaches a preset threshold, and the user equipment performs the handover process (hand over) to perform RA, and the user equipment implements beam failure recovery
- the RA is performed, the user equipment receives the PDCCH order of the network device, and the RA is executed when the user equipment loses synchronization, and the SR counter of the user equipment (scheduling request counter)
- the RA is executed when the scheduling request counter is up to the maximum value, and the RA is executed when the user equipment performs RRC (Radio Resource Control) connection reestablishment, and the RA is executed when the user equipment accesses the network device for the first time.
- the device performs RA, user equipment using the first priority service. Perform RA and so on with the second priority level service.
- the first random access procedure is: performing RA in the case that the user equipment implements the BFR, the network device configuring the first BI adjustment parameter in the first random access procedure, and the user equipment is in receiving the RAR message.
- the backoff parameter is set according to the BI and the first BI adjustment parameter, and the user equipment selects a random backoff time based on the backoff parameter.
- the user equipment After waiting for the random backoff time, the user equipment sends a preamble to the network device.
- the first random access procedure is: performing RA in the case that the user equipment implements the BFR, and the network device configures the first power adjustment parameter on the first random access procedure; the user equipment receives the power rampinig After the step (power ramp step), the transmit power is increased according to the power ramp step and the first power adjustment parameter (for example, the increased transmit power is the power calculated based on the power ramp step and the first power adjustment parameter) For example, the power ramp step multiplied by the first power adjustment parameter, the increased transmit power is the previous transmit power plus the increased transmit power), the user equipment uses the increased transmit power, and the user equipment sends a preamble to the network device.
- the step power ramp step
- the transmit power is increased according to the power ramp step and the first power adjustment parameter (for example, the increased transmit power is the power calculated based on the power ramp step and the first power adjustment parameter)
- the power ramp step multiplied by the first power adjustment parameter, the increased transmit power is the previous transmit power plus the increased transmit power
- the user equipment uses the increased transmit power
- the first random access procedure is: when the user equipment implements the BFR, the network device performs the RA, and the network device configures the first power ramp step for the first random access process; the user equipment is configured according to the first The power ramp step increases the transmit power (eg, the increased transmit power is the previous transmit power plus the first power ramp step), the user equipment uses the increased transmit power, and the user equipment sends a preamble to the network device.
- the second random access procedure is: performing RA in case that the user equipment is out of synchronization, and the network device configures a second BI adjustment parameter on the second random access procedure; the user equipment receives the RAR message.
- the user equipment sets a backoff parameter according to the BI and the second BI adjustment parameter, and the user equipment selects a random backoff time based on the backoff parameter.
- the user equipment sends a preamble to the network device.
- the second random access procedure is: performing RA when the uplink of the user equipment is out of synchronization, and the network device configuring the second power adjustment parameter for the second random access procedure; the user equipment receives the power After the rampinig step, the transmit power is increased according to the power ramp step and the second power adjustment parameter (eg, the increased transmit power is calculated based on the power ramp step and the second power adjustment parameter) Power, for example, the power ramp step multiplied by the second power adjustment parameter, the increased transmit power is the previous transmit power plus the increased transmit power), the user equipment uses the increased transmit power, and the user equipment sends the preamble to the network device. .
- the second random access procedure is: performing RA in case that the user equipment is out of synchronization, and the network device configures a second power stepping step for the first random access procedure; the user equipment is configured according to the The second power ramp step increases the transmit power (eg, the increased transmit power is the previous transmit power plus the second power ramp step), the user equipment uses the increased transmit power, and the user equipment sends a preamble to the network device.
- the second power ramp step increases the transmit power (eg, the increased transmit power is the previous transmit power plus the second power ramp step), the user equipment uses the increased transmit power, and the user equipment sends a preamble to the network device.
- FIG. 8 is a flowchart of Embodiment 3 of a random access method according to the present application. As shown in FIG. 8, the random access method provided in this embodiment includes the following steps:
- S301 The user equipment selects a first SSB sent by the network device to send a random access preamble signal to the network device.
- the network device configures different BIs for different SSBs (the different SSBs correspond to different transmit beams, and the first transmit beam corresponds to the first SSB), that is, the first SSB corresponds to the first BI, and/or the network device targets Different SSBs configure different power ramp steps, that is, the first SSB corresponds to the first power ramp step.
- the first SSB is selected, and the random access preamble signal is sent to the network device according to the selected first SSB. Specifically, the user equipment uses the PRACH resource corresponding to the first SSB to the network device. Sending the random access preamble signal.
- the network device receives the random access preamble signal sent by the user equipment, and identifies that the user equipment selects the first synchronization signal block SSB. Specifically, the network device receives the random access preamble signal sent by the user equipment by using the PRACH resource corresponding to the first SSB.
- the UE may select at least according to the Reference Signal Received Power (RSRP) of the SSB, for example, select the SSB with the largest RSRP; or select the SSB whose RSRP is greater than a certain threshold.
- RSRP Reference Signal Received Power
- the network device returns a random access response to the user equipment.
- the random access response includes a first BI and/or a first power ramp step corresponding to the first SSB.
- the network device receives the preamble pilot sent by the first user, the user equipment selects the first SSB synchronization signal block, and the network device sends the RAR message, where the RAR message carries the first BI and/or the first power ramp step.
- the first BI and/or the first power ramp step corresponds to the first SSB, and the first SSB is sent by the network device.
- the user equipment receives a random access response returned by the network device.
- the user equipment may determine the backoff parameter based on the first BI corresponding to the first SSB, and select according to the backoff parameter.
- a random backoff time after waiting for the backoff time, and/or, using a transmit power based on an increase in the power ramp step, to transmit a random access preamble to the network device.
- the user equipment selects a backoff time based on the BI, and after waiting for the backward time, sends a random access preamble signal to the network device for random access.
- the user equipment increases the transmit power based on the first power ramp step, and sends a random access preamble to the network device to perform random access according to the increased transmit power.
- the user equipment selects a backoff time based on the BI, and increases a transmit power based on the first power stepping step, and waits again to the network device according to the increased transmit power after the backward time Send random access preamble signals for random access.
- the network device may further receive a random access preamble signal sent by the user equipment by using the second SSB, and the network device returns a random access response to the user equipment according to the random access preamble signal.
- the random access response includes a second BI and/or a second power ramp step corresponding to the second SSB.
- the network device receives the random access preamble signal sent by the user equipment by using a PRACH resource corresponding to the second SSB.
- the network device may also receive the random access preamble signal sent by the second user equipment, the second user equipment selects the second SSB, and the network device sends the RAR message, where the RAR message carries the second BI and/or the second power step Long, the second BI and/or the second power ramp step corresponds to the second SSB, the second SSB is sent by the network device, and the second BI is different from the first BI and / Or the first power hill climbing step is different from the second power hill step.
- the network device uses the first transmit beam to correspond to the first SSB, and the second transmit beam corresponds to the second SSB.
- the number of user equipments covered by the first transmit beam is different from the number of users covered by the second transmit beam.
- the number of first transmit beam cover users is greater than the number of users of the second transmit beam cover, and the first BI value is greater than the second BI value.
- the number of users of the first transmit beam cover is smaller than the number of users of the second transmit beam cover, and the first power ramp step value is greater than the second power ramp step value.
- the random access method provided in this embodiment configures different BI and/or power ramp steps for different SSBs for different number of users covered by the beam, and avoids UEs with different congestion levels using the same BI to perform backoff.
- the process speeds up the random access process while reducing interference to the network.
- the present application further provides another random access scheme, including: the user equipment sends a random access preamble signal to the network device by using the first transmission beam and/or the first random access resource, where The random access preamble signal is used to initiate a random access procedure, and receives the BI sent by the network device.
- the user equipment sets a backoff parameter according to the BI, and then the user equipment performs any one of the following scenarios if the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed:
- Solution A If the current used beam of the user equipment is the first transmission beam, or the user equipment currently uses the first random access resource, or if the power ramp of the user equipment is randomly connected The first user equipment selects a random backoff time based on the backoff parameter if the inbound response message is considered to be a failure or the conflict resolution is considered to have failed. After waiting for the random backoff time, the user equipment initiates a random access procedure to the network device again;
- Scenario B If the beam currently used by the user equipment is the second transmission beam, or the user equipment currently uses the second random access resource, or if the power ramp of the user equipment is in the random access response The message receiving is considered to be a failure or the conflict resolution is considered to have failed after the failure, or if the power ramp of the user equipment is reset, the user equipment sets the backoff parameter to 0;
- Scenario C If the transmit power of the user equipment reaches a maximum value and the beam currently used by the user equipment is the second transmit beam, the user equipment selects a random backoff time based on the backoff parameter, and waits for the random backoff After the time, the user equipment initiates a random access procedure to the network device again;
- Scenario D If the power ramp-up counter of the user equipment changes after the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed, and the beam currently used by the user equipment is the first transmission beam, Or if the power ramp-up counter of the user equipment changes after the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed and the beam currently used by the user equipment is the second transmission beam, The user equipment selects a random backoff time based on the backoff parameter, and after waiting for the random backoff time, the user equipment initiates a random access procedure to the network device again;
- Solution E if the power ramp-up counter of the user equipment does not change after the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed, and the beam currently used by the user equipment is the second transmission beam, then The user equipment sets the backoff parameter to 0;
- the F If the power ramp of the user equipment is reset and the beam currently used by the user equipment is the second transmission beam, the user equipment sets the backoff parameter to 0;
- Scenario G If the beam currently used by the user equipment is a second transmission beam, and the second transmission beam is a transmission beam used by the user equipment, the user equipment selects a random based on the backoff parameter. After the backoff time, waiting for the random backoff time, the user equipment initiates a random access procedure to the network device again;
- Solution H The user equipment maintains a counter for the first transmission beam, the user equipment sends a pilot by using the first transmission beam, the counter is incremented by 1, and the user equipment determines that the counter does not When the maximum value is reached, the first user equipment sets the backoff parameter to 0;
- the user equipment maintains a counter for the first transmission beam, and the user equipment determines that the counter reaches a maximum value, the user equipment selects a random backoff time based on the backoff parameter, waiting for the After the random backoff time, the user equipment initiates a random access procedure to the network device again.
- the method further includes:
- the user equipment is used as the first transmission beam after the random access response message receives a packet that is considered to be failed or the collision resolution is considered to be a failure;
- the user equipment uses the random access resource as the first random access resource after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the beam currently used by the user equipment is a second transmission beam, or the user equipment currently uses the second random access resource, where the method further includes:
- the user equipment is used as a second transmission beam after the random access response message receives a packet that is considered to be failed or the collision resolution is considered to be a failure;
- the user equipment uses the random access resource as the second random access resource after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the sending power of the user equipment reaches a maximum value
- the user equipment reaches a maximum value of the sending power of the first user equipment after the random access response message is deemed to be failed or the conflict resolution is considered to be a failure.
- the power ramp-up counter of the first user equipment is reset, and the user equipment power hill-climbing counter of the user equipment after the random access response message is received as a failure or the conflict resolution is considered to be a failure.
- the first message in the random access process may be an Msg1 message in the random access process (as shown in FIG. 1 The message of the random access preamble information), or the modified message of the Msg1 message;
- the second message in the random access process may be an Msg2 message (such as the RAR message sent by the network device in FIG. 1), or the modified Msg2 The message (that is, the modified message of the RAR message);
- the third message in the random access process may be Msg3 in the random access process (such as the Msg3 message sent by the user equipment in FIG. 1), or the random access process.
- the third message in the message is modified;
- the fourth message in the random access process may be an Msg4 message (such as a message including contention resolution information sent by the network device in FIG. 1), or modified by the Msg4 message. Message.
- the network device sends the RAR message and carries the BI.
- the network device receives the preamble before the network device sends the RAR message, and the preamble may be sent by the first user equipment by using the first beam, or sent by the second user equipment.
- a user equipment is different from the second user equipment;
- the first user equipment receives the RAR message, obtains the BI in the RAR message, and the UE sets the backoff parameter according to the BI.
- the first user equipment sends the preamble to the network by using the first beam (beam) before receiving the RAR message.
- the first user equipment sends the preamble by using the first resource.
- the first resource may be referred to as a PRACH resource, or a random access (RA) resource, the first user equipment.
- the first resource is selected by the first user equipment to select the first sending beam of the network device, the first user equipment uses the first beam, and the first beam is the transmitting beam of the first user equipment.
- the first user equipment in the first case of random access response reception is considered not successful (the first situation may be referred to as: first)
- the execution is performed. The following actions (when one of the above two cases occurs):
- the first user equipment uses the first beam, the first user equipment selects a random backoff time based on the backoff parameter, and after waiting for the random backoff time, the first user equipment initiates a random access procedure.
- a user equipment initiates a random access procedure, which may be replaced by: the first user equipment sends a preamble, and the full text is not limited).
- the first user equipment selects a number X from the 0 to the Backoff Parameter Value interval as a backoff time. After waiting for the X time, the first user initiates a random access procedure (or, after waiting for the X time, the first user sends Preamble);
- X is greater than or equal to 0 and less than or equal to Backoff Parameter Value, and the time unit of X is ms (millisecond), or other time units;
- the sending preamble may be different from the preamble sent by the first user equipment by using the first beam at the beginning.
- the first user device can be used for another preambel. (helps to reduce the occurrence of conflicts)
- the first user equipment uses the second beam, the second beam is different from the first beam, and the first user equipment sets the backoff parameter to 0 (the first user equipment sets the backoff parameter to 0, Alternatively, the first user equipment initiates a random access procedure while waiting for 0 ms or the first user equipment waits 0 ms to send a preamble, which is not limited in the text.
- the first user equipment selects a number X from the 0 to the Backoff Parameter Value interval as a backoff time. After waiting for the X time, the first user initiates a random access procedure (or, after waiting for the X time, the first user sends Preamble);
- X is greater than or equal to 0 and less than or equal to Backoff Parameter Value, the time unit of X is ms (milliseconds), or other time units; in this scheme, it should be understood that the first user equipment may not support beam correspondence.
- the first user equipment uses the beam that is used after the random access response message is deemed to be failed or the conflict resolution is considered to be a failure as the first transmission beam.
- the first user equipment uses the beam that is used after the random access response message is deemed to be failed or the collision resolution is considered to be a failure as the second transmission beam.
- the first user equipment obtains an operation in which the network equipment indicates that the backoff parameter is set to 0 after switching the transmission beam.
- the network device indicates in the RAR whether to use the operations defined in this application. For example, the 1 bit (BI indication) indication information is occupied in the reserved bit of the subheader of the RAR. When the bit value is set to 1, the UE that receives the RAR message can perform the operation of setting the backoff parameter to 0 after switching the transmission beam.
- the network device determines whether to use the indication information according to the current network load condition.
- the first user equipment obtains, by using the source network device, whether the target network device uses the handover target to set the backoff parameter to 0, and the first user equipment initiates a random access procedure to the target network device.
- the UE determines whether to perform the backoff according to the specific situation, instead of performing the backoff blindly, avoiding the blind waiting of the UE, and speeding up the process of the UE device accessing the network device.
- the network device sends a RAR message carrying BI.
- the network device receives the preamble before the network device sends the RAR message, and the preamble may be sent by the first user equipment by using the first beam, or sent by the second user equipment, where the first user equipment is different from the second user equipment. .
- the first user equipment receives the RAR message, obtains the BI in the RAR message, and the UE sets the backoff parameter according to the BI.
- the first user equipment sends the preamble to the network device side by using the first beam (beam) before receiving the RAR message.
- the first user equipment sends the preamble by using the first resource.
- the first resource corresponds to a first transmit beam of the network device.
- the first user equipment selects the first resource corresponding to the first user equipment to select the first transmission beam of the network device, the first user equipment uses the first beam, and the first beam is the transmission beam of the first user equipment.
- the first user equipment uses the first resource, the first user equipment selects a random backoff time based on the backoff parameter, and after waiting for the random backoff time, the first user equipment initiates a random access procedure or The first user equipment sends a preamble.
- the specific execution action of the first user equipment is similar to the specific execution action of the first user equipment in the first implementation manner.
- the first user equipment selects the first transmit beam of the network device corresponding to the first resource, the first user equipment selects a random backoff time based on the backoff parameter, after waiting for the random backoff time, A user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment uses the second resource, and the second resource is different from the first resource (the first resource is the first resource used by the first user equipment to send the preamble by using the first resource), the first user equipment will backoff the parameter. (backoff parameter) is set to 0. Or, the first user equipment initiates a random access procedure while waiting for 0 ms or the first user equipment is waiting for 0 ms to send a preamble.
- the second resource is different from the first resource (the first resource corresponding to the first resource corresponding to the first resource, and the first resource is used by the first user equipment.
- the first resource used by the first user equipment sets the backoff parameter to 0; or the first user equipment initiates a random access procedure while waiting for 0 ms or the first user equipment is waiting for 0 ms. Send a preamble.
- first resource and the first beam used by the network device there is a correspondence between the first resource and the first beam used by the network device, or a relationship between the first resource and the identification information of the first beam used by the network device.
- second resource and the second beam used by the network device there is a corresponding relationship between the second resource and the identification information of the two transmit beams used by the network device.
- the first user equipment may be a user equipment that does not support beam correspondence. a first beam, where the second beam is a transmit beam of the first user equipment;
- the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble, and the backoff parameter is based on The BI in the latest RAR of the plurality of RARs received by the first user equipment is set. For example, the first user equipment uses the RAR received by the first beam to be the latest RAR, and the first user equipment sets the backoff parameter according to the BI in the RAR. For example, the RAR received by the first user equipment using the second beam is The latest RAR, the first user equipment sets the backoff parameters according to the BI in the RAR.
- the first user equipment obtains an operation of the network device to indicate whether the backoff parameter is set to 0 after the PRACH resource used by the first user equipment is switched; or the first user equipment switches the transmit beam of the selected network device.
- the network device indicates, in the RAR, whether to use the operation defined by the present invention; for example, occupying 1 bit (BI indication) indication information in a reserved bit of the subheader of the RAR, and setting the bit value to 1 to indicate the UE that receives the RAR message.
- the operation of setting the backoff parameter to 0 after switching the used PRACH resource; or the operation of setting the backoff parameter to 0 after the first user equipment switches the selected network device's transmit beam, and further, the network device according to the current network load The situation determines whether to use the indication information by itself;
- the first user equipment obtains, by using the source network device, whether the target network device supports the PRACH resource used by the first user equipment to switch the backoff parameter to 0; or the first user equipment switches the selected network device.
- the backoff parameter is set to 0, and the first user equipment initiates a random access procedure to the target network device.
- the UE determines whether to use the backoff according to the specific situation, instead of performing the backoff blindly, thereby avoiding the blind waiting of the UE device.
- the process of accessing the network device of the UE device is accelerated.
- the first user equipment uses the first resource, the first user equipment uses the first beam, and the first user equipment selects a random backoff time based on the backoff parameter, after waiting for the random backoff time, A user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment selects the first transmit beam of the network device corresponding to the first resource, the first user equipment uses the first beam, and the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble;
- the first user equipment uses the second resource
- the second beam is different from the first beam
- the second resource is different from the first resource
- the first resource used by the first resource to send the preamble the first user equipment sets the backoff parameter to 0; or the first user equipment initiates a random access procedure while waiting for 0 ms or the first user equipment is waiting for 0 ms. Send a preamble;
- the first user equipment selects the second beam of the network device corresponding to the second resource, if the first user equipment uses the second beam, the second beam is different from the first beam, and the second resource is different from the first resource (the first resource corresponds to the first resource)
- the first transmission beam of the network device where the first resource is the first resource used by the first user equipment to transmit the preamble by using the first resource in step 201, the first user equipment sets the backoff parameter to 0; or The first user equipment initiates a random access procedure while waiting for 0 ms or the first user equipment is waiting for 0 ms to send a preamble.
- the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble, and the backoff parameter is based on The BI in the latest RAR of the plurality of RARs received by the first user equipment is set. For example, the first user equipment uses the RAR received by the first beam to be the latest RAR, and the first user equipment sets the backoff parameter according to the BI in the RAR. For example, the RAR received by the first user equipment using the second beam is The latest RAR, the first user equipment sets the backoff parameters according to the BI in the RAR.
- the first user equipment changes the transmit beam (eg, changing the transmit beam can be changed from using the first beam to using the second beam).
- the optional power of the first user equipment counter of power ramping has changed after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the power of the first user equipment counter of power ramping does not change after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the two factors of the PRACH resource and the transmitting beam of the user equipment are considered, the use of different PRACH resources and the use of the transmitting beam of the user equipment, or the transmission beam condition of the network equipment selected by the UE and the user equipment.
- the UE determines whether to use the backoff according to the specific situation, instead of performing the backoff blindly, avoiding the blind waiting of the UE, and speeding up the process of the UE device accessing the network device.
- the first step is similar to the foregoing implementation manners, in the first case where the first user equipment is considered to be failed (Random Access Response reception is considered not successful), or the first user equipment is ready to initiate again.
- the following actions are performed (when one of the above three cases occurs):
- the transmission power of the first user equipment may be the preamble receiving target power PREAMBLE_RECEIVED_TARGET_POWER
- the maximum value (the maximum value of the transmission power of the first user equipment is obtained from the network device side), and the first user equipment selects a random backoff time based on the backoff parameter, after waiting for the random backoff time
- the first user equipment initiates a random access procedure or the first user equipment sends a preamble
- the power ramp counter is incremented by one (ie, the value corresponding to the power ramp counter is incremented by one).
- the sending power of the first user equipment reaches a maximum value, and the first user equipment changes the transmitting beam (for example, if the changing of the transmitting beam may be changed from using the first beam to using the second beam), the first The user equipment selects a random backoff time based on the backoff parameter, and after waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble;
- the first user equipment selects a random backoff time based on the backoff parameter (random backoff time) After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment selects a random backoff time based on a backoff parameter (random backoff) Time), after waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- a backoff parameter random backoff
- the first user equipment sets the backoff parameter setting. 0; or, the first user equipment initiates a random access procedure while waiting for 0 ms, or the first user equipment is waiting for 0 ms to send a preamble.
- the counter value does not change.
- the first user equipment uses the second resource, and the second resource is different from the first resource (the first resource is the first resource used by the first user equipment to send the preamble by using the first resource), the first user equipment will climb the power The counter is set to 0.
- the first user equipment sets the backoff parameter to 0, or the first user equipment initiates 0 ms. During the random access procedure, or the first user equipment is waiting for 0 ms to send a preamble.
- the first user equipment sets a backoff parameter to 0; or, the first user equipment waits for 0 ms. A random access procedure is initiated, or the first user equipment waits for 0 ms to send a preamble. If the power gradient of the first user equipment does not change, and the first user equipment does not change the transmit beam, the first user equipment selects a random backoff time based on the backoff parameter ( Random backoff time), after waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble;
- the first user equipment may be a user equipment that does not support beam correspondence.
- the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble, and the backoff parameter is based on
- the BI in the latest RAR of the plurality of RARs received by the first user equipment is set.
- the first user equipment uses the RAR received by the first beam to be the latest RAR, and the first user equipment sets the backoff parameter according to the BI in the RAR.
- the RAR received by the first user equipment using the second beam is The latest RAR, the first user equipment sets the backoff parameters according to the BI in the RAR.
- the first user equipment changes the transmit beam (eg, changing the transmit beam can be changed from using the first beam to using the second beam).
- the UE determines whether to use the backoff according to the specific situation, instead of performing the backoff blindly, instead of blindly performing the backoff, avoiding the blind waiting of the UE device, and speeding up the UE.
- the process of the device accessing the network device.
- the first case where the first user equipment is in the case of the random access response reception is considered not successful, or the second case in which the first user equipment is ready to initiate the random access procedure again, or In the third case where the first user equipment is ready to send the preamble again, perform the following actions (when one of the above three cases occurs):
- the transmission power of the first user equipment (the transmission power of the first user equipment may be the preamble receiving target power PREAMBLE_RECEIVED_TARGET_POWER) reaches a maximum value (optional, the first user equipment from the network)
- the device side obtains a maximum value of the transmit power of the first user equipment.
- the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates. The random access procedure or the first user equipment sends a preamble.
- the first user equipment changes the transmission beam, and the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment uses the second beam, the second beam is different from the first beam, the first user equipment sets the backoff parameter to 0; or the first user equipment initiates a random access procedure while waiting for 0 ms, or The first user equipment waits 0 ms to send a preamble.
- the first user equipment uses the second beam, the second beam is different from the first beam, and the power of the counter of power ramping does not change (increase/decrease), the first user equipment sets the backoff parameter setting. 0; or, the first user equipment initiates a random access procedure while waiting for 0 ms, or the first user equipment is waiting for 0 ms to send a preamble.
- the first user equipment uses the second beam, the second beam is different from the first beam power of the climber counter (increase/decrease), the first user equipment selects one based on the backoff parameter The random backoff time, after waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment may be a user equipment that does not support beam correspondence.
- the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble, and the backoff parameter is based on
- the BI in the latest RAR of the plurality of RARs received by the first user equipment is set.
- the first user equipment uses the RAR received by the first beam to be the latest RAR, and the first user equipment sets the backoff parameter according to the BI in the RAR.
- the RAR received by the first user equipment using the second beam is The latest RAR, the first user equipment sets the backoff parameters according to the BI in the RAR.
- the first user equipment changes the transmit beam (eg, changing the transmit beam can be changed from using the first beam to using the second beam).
- the UE determines whether to use the backoff according to the specific situation, instead of performing the backoff blindly, instead of blindly performing the backoff, avoiding the blind waiting of the UE device, and speeding up the UE device.
- the second beam is different from the first beam, and it is determined whether the second beam is an unused transmit beam.
- the first user equipment sets the backoff parameter to 0ms.
- a random backoff time is selected based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the second beam is a beam scanning beam sweap (eg, the beam scanning is that the first user equipment has N beams, and the first user equipment uses beam 1, beam 2, until the beam N is the unused transmit beam in beam sweap).
- the beam scanning is that the first user equipment has N beams, and the first user equipment uses beam 1, beam 2, until the beam N is the unused transmit beam in beam sweap.
- the first user equipment sets the backoff parameter to 0ms.
- a random backoff time is selected based on the backoff parameter, and after waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment. Send a preamble.
- the first user equipment may be a user equipment that does not support beam correspondence.
- the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble, and the backoff parameter is according to the The BI in the latest RAR of the RAR received by the user equipment is set.
- the first user equipment uses the RAR received by the first beam to be the latest RAR, and the first user equipment sets the backoff parameter according to the BI in the RAR.
- the RAR received by the first user equipment using the second beam is The latest RAR, the first user equipment sets the backoff parameters according to the BI in the RAR.
- the first user equipment changes the transmit beam (eg, changing the transmit beam can be changed from using the first beam to using the second beam).
- the backoff parameter is continuously set to 0, and the user equipment is prevented from cheating.
- the first user sets a timer timer for each beam, for example, the first user sets to use beam(j) to maintain a timer(j), and uses beam(j) to send the preamble after or at the time or before, the timer(j) initial For Xms and start to decrease, if the first user equipment uses beam(j) again before the timer(j) time X is reduced to 0ms, select a random backoff time based on the backoff parameter, waiting After the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment sets the backoff parameter to 0;
- Timer(j) can be the first beam, or the second beam.
- timer(j) can be initialized to 0ms and continuously increased. If the first user is set before the timer(j) time is increased to Xms, beam(j) is used again, and a random backoff is selected based on the backoff parameter. After the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment sets the backoff parameter to 0; the timer(j) may be the first beam, or the second beam.
- the first user sets a timer counter for each transmit beam. For example, the first user sets to use beam(j) to maintain a counter(j), and after beam (j) sends the preamble or before or before, counter(j) Initially X, use beam(j) to send a preamblecounter(j) minus 1. If the first user is set before the counter(j) time X is reduced to 0, use beam(j) again, based on the backoff parameter. A random backoff time, after waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment sets the backoff parameter to 0; the timer(j) may be the first beam, or the second beam.
- counter(j) can be initialized to 0, and beam (j) is used to send preamblecounter(j) plus 1. If the first user is set before counter(j) is increased to X (X is the maximum value), beam is used again. (j), selecting a random backoff time based on the backoff parameter, and after waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble.
- the first user equipment sets the backoff parameter to 0; the timer(j) may be the first beam, or the second beam.
- the first user equipment may be a user equipment that does not support beam correspondence.
- the first user equipment selects a random backoff time based on the backoff parameter. After waiting for the random backoff time, the first user equipment initiates a random access procedure or the first user equipment sends a preamble, and the backoff parameter is according to the The BI in the latest RAR of the RAR received by the user equipment is set. For example, the first user equipment uses the RAR received by the first beam to be the latest RAR, and the first user equipment sets the backoff parameter according to the BI in the RAR. For example, the RAR received by the first user equipment using the second beam is The latest RAR, the first user equipment sets the backoff parameters according to the BI in the RAR.
- the first user equipment changes the transmit beam (eg, changing the transmit beam can be changed from using the first beam to using the second beam)
- the technical solution provided by the implementation manner prevents the user equipment from cheating in order to prevent the user equipment from continuously switching the beam and continuously setting the backoff parameter to 0.
- the power of the first user equipment, the counter of power ramping changes after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the power of the first user equipment counter of power ramping does not change after the random access response message reception is deemed to be failed or the conflict resolution is considered to be a failure.
- the first user equipment uses a beam that is used after the random access response message is deemed to be failed or the conflict resolution is considered to be a failure.
- the first user equipment uses a beam that is used after the random access response message is deemed to be failed or the conflict resolution is considered to be a failure.
- the first user equipment reaches a maximum value of the transmit power of the first user equipment after the random access response message is deemed to be failed or the conflict resolution is considered to be a failure.
- the first user equipment resets the power hillping counter of the first user equipment after the random access response message reception is deemed to be failed or the conflict resolution is deemed to be failed.
- the UE determines whether to perform the backoff according to the specific situation, instead of blindly performing the backoff, avoiding the blind waiting of the UE device, and speeding up the process of the UE device accessing the network device.
- the program can also be applied to communications areas such as WiFi, Bluetooth, and LiFi.
- FIG. 9 is a schematic structural diagram of Embodiment 1 of a user equipment provided by the present application.
- the user equipment 10 includes: a receiving module 11, a processing module 12, and a sending module 13;
- the receiving module 11 is configured to receive random access configuration information that is sent by the network device, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation;
- the sending module 13 is configured to: when the processing module performs the first random access procedure, according to the received backoff indication BI and the first BI adjustment parameter corresponding to the first random access procedure situation, and/or the first A power parameter is configured to send a random access preamble signal to the network device for random access.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the receiving module 11 is further configured to receive a random access response message returned by the network device.
- the processing module is further configured to: according to the received backoff indication BI and the first random access procedure, in the case that the random access response message is deemed to be failed, or the conflict resolution is considered to be a failure.
- the first BI adjustment parameter and/or the first power parameter are used by the sending module to resend the random access preamble signal to the network device for random access.
- processing module 12 is specifically configured to:
- the processing module 12 is further configured to: set a backoff parameter according to the received BI, select a backoff time based on the backoff parameter, and/or, after the backoff time, and/or increase the transmit power according to the received power stepping step size. And transmitting, by the sending module, a random access preamble signal to the network device for random access.
- the user equipment provided in any of the foregoing embodiments is used to perform the technical solution on the user equipment side in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
- the receiving module 11 is configured to receive the random access configuration information that is sent by the network device, where the random access configuration information includes at least two backoff indication BI adjustment parameters and/or power parameters corresponding to the random access procedure situation;
- the processing module 12 is configured according to the received backoff indication BI and the first random access procedure. a BI adjustment parameter and/or a first power parameter, by the sending module 13 sending a random access preamble signal to the network device for random access; or, the processing module according to the received BI and the power ramp step
- the transmitting module sends a random access preamble signal to the network device for random access.
- processing module 12 is specifically configured to:
- the sending module sends a random access preamble signal to the network device for random access.
- the user equipment provided in this embodiment is used to perform the technical solution on the user equipment side in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 10 is a schematic structural diagram of Embodiment 1 of a network device according to the present application. As shown in FIG. 10, the network device 20 includes:
- the processing module 21 is configured to configure a corresponding backoff indication BI adjustment parameter and/or a power parameter for different random access process conditions
- the sending module 22 is configured to send random access configuration information, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the network device provided in this embodiment is used to perform the technical solution on the network device side in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 11 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present application. As shown in FIG. 11, the user equipment 30 includes:
- the sending module 31 is configured to select a first SSB sent by the network device to send a random access preamble signal to the network device;
- the receiving module 32 is configured to receive a random access response returned by the network device, where the random access response includes a first backoff indication BI and/or a first power ramp step corresponding to the first SSB;
- the processing module 33 is configured to pass, according to the first backoff indication BI and/or the first power ramp step, in the case that the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed.
- the sending module sends the random access preamble signal to the network device for random access.
- the sending module 31 is specifically configured to send the random access preamble signal to the network device by using a PRACH resource corresponding to the first SSB.
- processing module 33 is specifically configured to:
- the user equipment provided in this embodiment is used to perform the technical solution on the user equipment side in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 12 is a schematic structural diagram of Embodiment 2 of a network device according to the present application. As shown in FIG. 12, the network device 40 includes:
- the receiving module 41 is configured to receive a random access preamble signal sent by the user equipment, and identify that the user equipment selects the first synchronization signal block SSB;
- the sending module 42 is configured to return a random access response to the user equipment according to the random access preamble signal, where the random access response includes a first backoff indication BI and/or a first corresponding to the first SSB. Power ramp step.
- the receiving module 41 is specifically configured to receive the random access preamble signal sent by the user equipment by using a PRACH resource corresponding to the first SSB.
- the network device provided in this embodiment is used to perform the technical solution on the network device side in any of the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
- the application also provides a user equipment, the method comprising: a receiver, a processor, a transmitter, and a memory, where the memory is used to store a computer program;
- the receiver is configured to receive random access configuration information that is broadcast by the network device, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation;
- the transmitter is configured to: when the processor performs the first random access procedure, according to the received BI and the first BI adjustment parameter and/or the first power parameter corresponding to the first random access procedure situation, Sending a random access preamble signal to the network device for random access.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the receiver is further configured to receive a random access response message returned by the network device;
- the processor is further configured to: according to the received backoff indication BI and the first random access procedure situation The first BI adjustment parameter and/or the first power parameter are used by the transmitter to retransmit the random access preamble signal to the network device for random access.
- the processor is specifically configured to:
- the processor is further configured to: set a backoff parameter according to the received BI, select a backoff time based on the backoff parameter, and/or, after the backoff time, and/or, according to the received power, the increased power of the stepping step, And transmitting, by the transmitter, a random access preamble signal to the network device for random access.
- the application also provides a user equipment, comprising: a receiver, a processor, a transmitter and a memory, wherein the memory is used to store a computer program;
- the receiver is configured to receive random access configuration information that is sent by the network device, where the random access configuration information includes at least two backoff indication BI adjustment parameters and/or power parameters corresponding to the random access procedure situation;
- the processor When the user equipment changes from performing the second random access procedure to performing the first random access procedure, the processor is configured according to the received backoff indication BI and the first corresponding to the first random access procedure. a BI adjustment parameter and/or a first power parameter, by which the random access preamble signal is sent to the network device for random access; or the processor passes the received BI and the power stepping step The transmitter sends a random access preamble signal to the network device for random access.
- the processor is specifically configured to:
- the transmitter sends a random access preamble signal to the network device for random access.
- the application also provides a network device, comprising: a memory for storing a computer program
- a processor configured to configure a corresponding backoff indication BI adjustment parameter and/or a power parameter for different random access process conditions
- a transmitter configured to broadcast random access configuration information, where the random access configuration information includes at least one backoff indication BI adjustment parameter and/or power parameter corresponding to the random access procedure situation.
- the power parameter includes a power adjustment parameter or a power ramp step, and the power adjustment parameter or the power ramp step is used to increase the transmit power.
- the application also provides a user equipment, comprising: a memory for storing a computer program
- a transmitter configured to select a pre-configured first SSB to send a random access preamble signal to the network device
- a receiver configured to receive a random access response returned by the network device, where the random access response includes a first backoff indication BI and/or a first power ramp step corresponding to the first SSB;
- a processor configured to pass, according to the first backoff indication BI and/or the first power ramp step, in case the random access response message reception is deemed to be failed or the conflict resolution is considered to be failed
- the device again sends a random access preamble signal to the network device for random access.
- the transmitter is specifically configured to send the random access preamble signal to the network device by using a PRACH resource corresponding to the first SSB.
- the processor is specifically configured to:
- the application also provides a network device, comprising: a memory for storing a computer program
- a receiver configured to receive a random access preamble signal sent by the user equipment by using the first SSB
- a transmitter configured to return a random access response to the user equipment according to the random access preamble signal; the random access response includes a first backoff indication BI and/or a first power corresponding to the first SSB Climbing step size.
- the receiver is specifically configured to receive the random access preamble signal sent by the user equipment by using a PRACH resource corresponding to the first SSB.
- the number of processors is at least one, and is used to execute an execution instruction of the memory storage, that is, a computer program.
- the random access method provided by the foregoing various embodiments is performed by the network device performing data interaction between the network device and the user equipment.
- the memory may be integrated into the processor.
- the present application also provides a storage medium for storing a computer program for implementing a random access method on the user equipment side in any of the embodiments.
- the present application also provides a storage medium for storing a computer program for implementing a random access method on the network device side in any of the embodiments.
- the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or other general-purpose processor, digital signal processor (English: Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), etc.
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in connection with the present application may be directly embodied by hardware processor execution or by a combination of hardware and software modules in a processor.
- All or part of the steps of implementing the above method embodiments may be performed by hardware associated with the program instructions.
- the aforementioned program can be stored in a readable memory.
- the steps including the foregoing method embodiments are performed; and the foregoing memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.
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Abstract
本申请提供一种随机接入方法和设备,该方法包括:用户设备接收网络设备发送的随机接入配置信息,随机接入配置信息包括至少一种随机接入过程情况对应的BI调整参数和/或功率参数,用户设备在执行第一随机接入过程情况时,根据接收到的BI以及第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向网络设备发送随机接入前导信号进行随机接入,网络设备针对用户设备执行不同的随机接入过程配置不同的随机接入配置信息,可加快完成随机接入,同时减少对网络的干扰。
Description
本申请要求于2018年4月18日提交中国专利局、申请号为201810350172.X、申请名称为“一种随机接入方法和设备”的中国专利申请的优先权,以及于2018年1月29日提交中国专利局、申请号为201810082761.4、申请名称为“一种随机接入的方法”的中国专利申请的优先权,以及于2017年9月11日提交中国专利局、申请号为201710812209.1、申请名称为“一种随机接入的方法”的中国专利申请的优先权,它们的全部内容通过引用结合在本申请中。
本申请涉及通信技术,尤其涉及一种随机接入方法和设备。
传统长期演进(Long Term Evolution,LTE)即4G(4th Generation)移动通信***中,用户设备初始接入***包含主要三个重要步骤(1)初始同步和小区搜索过程;(2)网络发送基本***信息;(3)随机接入过程。在步骤(1)中用户设备可以根据主同步信号(Primary Synchronization Signal,PSS)和辅同步信号(Secondary Synchronization Signal,SSS)获得下行粗时间同步和粗频率同步,并进一步获得符号同步和帧同步,并获得循环前缀以及小区ID等信息,在步骤(2)中***发送基本***消息,即***信息块(system information block,SIB)消息,用户设备通过接收基本***消息(SIB消息)并读取基本***信息,从而可以获得上行随机接入的网络配置消息,并为第(3)步的随机接入过程提供相关信息;在步骤(3)中用户设备根据***提供的基本***信息获得上行随机接入资源配置信息,并进行上行随机接入过程。根据3GPP最终达成的结论,上行随机接入过程中,基于竞争的随机接入过程仍然采用类似传统LTE***发送四个消息的方法,即用户设备发送前导序列(Preamble),网络设备反馈随机接入响应(Random Access Response,RAR,),用户设备发送Message 3消息,网络设备回复message 4进行竞争解决,从而完成最终的上行随机接入过程;
图1为LTE中基于竞争的随机接入方式的流程示意图,如图1所示,该随机接入方式中,UE发送随机接入前导信号(random access preamble)给基站,并告诉基站(eNodeB,eNB)有一个随机接入的请求,同时使得eNB能估计与UE之间的传输时延并以此校准上行timing(timing advance,TA)。UE发送了preamble之后,在随机接入反馈的时间窗内监听PDCCH,以便接收eNB回复的RAR消息。由于preamble所处的资源可能由多个UE使用,为了区分不同UE,接下来,各UE发送RA过程中的第三消息,该信息包含该UE的唯一标识,即各UE的唯一标识不同。最后一步,eNB通过回复物理随机接入信道(Physical Random Access Channel,PRACH)过程中的第三消息中UE的唯一标识来告知 哪个或哪些UE竞争信道成功。在LTE、5g NR等无线通信***中,用户设备(User Equipment,UE)需要通过随机接入从无线资源控制(Radio Resource Control,RRC)空闲态(或inactice态)进入RRC连接态,才能与基站间建立起各种承载,获取到一些必须的资源以及参数配置,进而才能与基站进行通信。
然而,在目前的随机接入过程中,不涉及接入情况以及使用多个波束的传输,在NR***中,用户设备如何进行退避技术,现有技术中还不存在具体的实现方案和标准。
发明内容
本申请提供一种随机接入方法和设备,提供一种在NR***中,用户设备的退避技术。
第一方面,本申请提供一种随机接入方法,所述方法包括:
用户设备接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少一种随机接入过程情况对应的BI调整参数和/或功率参数;
所述用户设备在执行第一随机接入过程情况时,根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入。
在一种具体实现中,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
在一种具体实现中,所述方法还包括:
所述用户设备接收所述网络设备返回的随机接入响应消息;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则所述用户设备根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备再次发送随机接入前导信号进行随机接入。
在一种具体实现中,所述根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入,包括:
所述用户设备根据接收到的所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,向所述网络设备发送随机接入前导信号进行随机接入;
或者,
所述用户设备根据所述第一功率参数增加发射功率,并根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入;
或者,
所述用户设备根据接收所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,并根据所述第一功率参数增加发射功率,在等待所述退避时间之后根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入。
在一种具体实现中,根据第一功率参数增加发射功率,包括:
根据记录的(或者接收到的)功率爬坡步长以及所述第一BI调整参数增加发射功率;
或者,
根据第一功率爬坡步长增加发射功率。
在一种具体实现中,所述方法还包括:
所述用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述用户设备根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到(或者预先存储的)的功率爬坡步长增加后的发射功率,所述用户设备向所述网络设备发送随机接入前导信号进行随机接入。
第二方面,本申请提供一种随机接入方法,包括:
用户设备接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少二种随机接入过程情况对应的BI调整参数和/或功率参数;
所述用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入;或者,根据接收到的BI以及功率爬坡步长向所述网络设备发送随机接入前导信号进行随机接入。
在一种具体实现方式中,所述根据接收到的BI以及功率爬坡步长向所述网络设备发送随机接入前导信号进行随机接入,包括:
所述用户设备根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,向所述网络设备发送随机接入前导信号进行随机接入;
或者,
所述用户设备根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入;
或者,
所述用户设备根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入。
在一种具体实现方式中,所述BI为执行所述第二随机接入过程情况时记录的BI。
第三方面,本申请提供一种随机接入方法,包括:
网络设备针对不同的随机接入过程情况配置对应的BI调整参数和/或功率参数;
所述网络设备发送随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的BI调整参数和/或功率参数。
在一种具体实现方式中,功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
在一种具体实现方式中,网络设备针对用户设备执行第二随机接入过程情况配置第二BI调整参数和/或第二功率参数,该第二功率参数包括第二功率调整参数或第二功率爬坡步长。
在该方案的具体实现中,第二随机接入过程情况与第一随机接入过程情况不同,第一BI调整参数与第二BI调整参数不同;第二功率调整参数与第一功率调整参数不同;第二 功率爬坡步长与第一功率爬坡步长不同。
第四方面,本申请提供一种随机接入方法,包括:
用户设备选择网络设备发送的第一SSB,向网络设备发送随机接入前导信号;
所述用户设备接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,所述用户设备根据所述第一退避指示BI和/或第一功率爬坡步长向所述网络设备再次发送随机接入前导信号进行随机接入。
在一种具体实现方式中,所述用户设备选择预先配置的第一同步信号块SSB向网络设备发送随机接入前导信号,包括:
所述用户设备使用所述第一SSB对应的PRACH资源向所述网络设备发送所述随机接入前导信号。
在一种具体实现方式中,所述用户设备根据所述第一退避指示BI和/或第一功率爬坡步长向所述网络设备再次发送随机接入前导信号进行随机接入,包括:
所述用户设备基于所述BI选择退避时间,并在等到所述退步时间之后,向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
所述用户设备基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
所述用户设备基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所述退步时间之后根据增加后的发射功率向所述网络设备再次发送随机接入前导信号进行随机接入。
在一种具体实现方式中,所述方法还包括:
所述用户设备选择第二SSB向网络设备发送随机接入前导信号;
所述用户设备接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述第二SSB对应的第二BI和/或第二功率爬坡步长;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,所述用户设备根据所述第二BI和/或第二功率爬坡步长向所述网络设备再次发送随机接入前导信号进行随机接入。
在一种具体实现中,所述用户设备选择第二SSB向网络设备发送随机接入前导信号,包括:
用户设备选择第二SSB对应的PRACH资源向网络设备发送随机接入前导信号。
在一种具体实现中,网络设备使用第一发送波束对应所述第一SSB,网络设备使用第二发送波束对应所述第二SSB。
可选的,所述第一发送波束覆盖的用户设备数目不同于所述第二发送波束覆盖的用户数目。
第五方面,本申请提供一种随机接入方法,包括:
网络设备接收用户设备发送的随机接入前导信号,并识别出所述用户设备选择了第一SSB;
所述网络设备向所述用户设备返回随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长。
在一种具体实现中,所述网络设备接收用户设备通过第一同步信号块SSB发送的随机接入前导信号,包括:
所述网络设备接收所述用户设备通过所述第一SSB对应的PRACH资源发送的所述随机接入前导信号。
在一种具体实现中,所述方法还包括:
网络设备接收用户设备发送的随机接入前导信号,识别所述用户设备选择了第二SSB;
所述网络设备根据所述随机接入前导信号,向所述用户设备返回随机接入响应;所述随机接入响应包括所述第二SSB对应的第二BI和/或第二功率爬坡步长。
在一种具体实现中,所述网络设备接收所述用户设备通过所述第二SSB对应的PRACH资源发送的所述随机接入前导信号。
在一种具体实现中,所述网络设备使用第一发送波束对应所述第一SSB。
可选的,所述网络设备使用第二发送波束对应所述第二SSB。
可选的,所述第一发送波束覆盖的用户设备数目不同于所述第二发送波束覆盖的用户数目。
第六方面,本申请提供一种随机接入方法,包括:
用户设备通过使用第一传输波束和/或第一随机接入资源向网络设备发送随机接入前导信号,所述随机接入前导信号用于发起随机接入过程;
所述用户设备接收所述网络设备发送的退避指示器BI;
所述用户设备根据所述BI设置退避参数;
所述用户设备在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,执行以下方案中的任一种:其中,
方案A:若所述用户设备当前使用的波束为所述第一传输波束,或,所述用户设备当前使用第一随机接入资源,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变,或,若所述用户设备的发送功率达到最大值,则所述第一用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案B:若所述用户设备当前使用的波束为第二传输波束,或,所述用户设备当前使用第二随机接入资源,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后没有发生过改变,或,若所述用户设备的功率爬坡计数器发生重置,则所述用户设备将所述退避参数设置为0;
方案C:若所述用户设备的发送功率达到最大值并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案D:若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲 突解决被认为失败后发生过改变并且所述用户设备当前使用的波束为所述第一传输波束,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案E:若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后没有发生过改变并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备将所述退避参数设置为0;
方案F:若所述用户设备的功率爬坡计数器发生重置并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备将所述退避参数设置为0;
方案G:若所述用户设备当前使用的波束为第二传输波束,且所述第二传输波束为所述用户设备之前使用过的传输波束,则所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案H:所述用户设备为所述第一传输波束维持一个计数器,所述用户设备使用所述所述第一传输波束发送一次先导,所述计数器加1,所述用户设备判断所述计数器没有达到最大值的情况下,所述第一用户设备将所述退避参数设置为0;
方案I:所述用户设备为所述第一传输波束维持一个计数器,所述用户设备判断所述计数器达到最大值的情况下,所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程。
在一种具体实现方式中,所述用户设备当前使用的波束为第一传输波束,或,所述用户设备当前使用第一随机接入资源,则所述方法还包括:
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为所述第一传输波束;
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用随机接入资源为所述第一随机接入资源。
可选的,所述用户设备当前使用的波束为第二传输波束,或,用户设备当前使用第二随机接入资源,则所述方法还包括:
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为所述第二传输波束;
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用随机接入资源为所述第二随机接入资源。
可选的,所述用户设备的发送功率达到最大值,则所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后所述第一用户设备的发送功率达到最大值。
可选的,所述第一用户设备的功率爬坡计数器发生重置,则所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后所述用户设备的功率爬坡计数器发生重置。
第七方面,本申请提供一种用户设备,所述用户设备包括:接收模块,处理模块以及发送模块;
所述接收模块用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述发送模块用于在所述处理模块执行第一随机接入过程情况时,根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
可选的,所述接收模块还用于接收所述网络设备返回的随机接入响应消息;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则所述处理模块还用于根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述处理模块具体用于:
根据接收到的所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据所述第一功率参数增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,并根据所述第一功率参数增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述处理模块还用于根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到的功率爬坡步长增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
第八方面,本申请提供一种用户设备,包括:接收模块,处理模块以及发送模块;
所述接收模块用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少二种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,所述处理模块根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;或者,所述处理模块根据接收到的BI以及功率爬坡步长通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述处理模块具体用于:
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述 退避时间之后,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
第九方面,本申请提供一种网络设备,包括:
处理模块,用于针对不同的随机接入过程情况配置对应的退避指示BI调整参数和/或功率参数;
发送模块,用于发送随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
第十方面,本申请提供一种用户设备,包括:
发送模块,用于选择网络设备发送的第一SSB,向网络设备发送随机接入前导信号;
接收模块,用于接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长;
处理模块,用于在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,根据所述第一BI和/或第一功率爬坡步长通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述发送模块具体用于使用所述第一SSB对应的PRACH资源向所述网络设备发送所述随机接入前导信号。
可选的,所述处理模块具体用于:
基于所述BI选择退避时间,并在等到所述退步时间之后,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所述退步时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
第十一方面,本申请提供一种网络设备,包括:
接收模块,用于接收用户设备发送的随机接入前导信号,并识别出所述用户设备选择了第一SSB;
发送模块,用于根据所述随机接入前导信号,向所述用户设备返回随机接入响应;所 述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长。
可选的,所述接收模块具体用于接收所述用户设备通过所述第一SSB对应的PRACH资源发送的所述随机接入前导信号。
第十二方面,本申请提供一种用户设备,所述方法包括:接收器,处理器,发送器,以及存储器,存储器用于存储计算机程序;
所述接收器用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述发送器用于在所述处理器执行第一随机接入过程情况时,根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
可选的,所述接收器还用于接收所述网络设备返回的随机接入响应消息;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则所述处理器还用于根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述处理器具体用于:
根据接收到的所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据所述第一功率参数增加发射功率,并根据增加后的发射功率通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,并根据所述第一功率参数增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述处理器还用于根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到的功率爬坡步长增加后的发射功率,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
第十三方面,本申请提供一种用户设备,包括:接收器,处理器,发送器以及存储器,所述存储器用于存储计算机程序;
所述接收器用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少二种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,所 述处理器根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;或者,所述处理器根据接收到的BI以及功率爬坡步长通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述处理器具体用于:
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
第十四方面,本申请提供一种网络设备,包括:用于存储计算机程序的存储器;
处理器,用于针对不同的随机接入过程情况配置对应的退避指示BI调整参数和/或功率参数;
发送器,用于发送随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
第十五方面,本申请提供一种用户设备,包括:用于存储计算机程序的存储器;
发送器,用于选择网络设备发送的第一SSB向网络设备发送随机接入前导信号;
接收器,用于接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长;
处理器,用于在在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,根据所述第一退避指示BI和/或第一功率爬坡步长通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述发送器具体用于使用所述第一SSB对应的PRACH资源向所述网络设备发送所述随机接入前导信号。
可选的,所述处理器具体用于:
基于所述BI选择退避时间,并在等到所述退步时间之后,通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所 述退步时间之后根据增加后的发射功率,通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入。
第十六方面,本申请提供一种网络设备,包括:用于存储计算机程序的存储器;
接收器,用于接收用户设备发送的随机接入前导信号,并识别出所述用户设备选择了第一SSB;
发送器,用于向所述用户设备返回随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长。
可选的,所述接收器具体用于接收所述用户设备通过所述第一SSB对应的PRACH资源发送的所述随机接入前导信号。
第十七方面,本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用于实现第一方面任一项提供的随机接入方法。
第十八方面,本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用于实现第二方面任一项提供的随机接入方法。
第十九方面,本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用于实现第三方面任一项提供的随机接入方法。
第二十方面,本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用于实现第四方面任一项提供的随机接入方法。
第二十一方面,本申请提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用于实现第五方面任一项提供的随机接入方法。
本申请提供的随机接入方法和设备,网络设备针对用户设备执行随机接入过程的不同情况配置不同的BI调整参数和/或功率参数,在用户执行某一种随机接入过程情况时,例如第一随机接入过程情况,可以根据接收到BI以及该第一随机接入过程情况对应的第一BI调整参数和或第一功率参数,向网络设备发送随机接入前导信号进行随机接入过程,即用户设备可以根据不同的随机接入过程情况选择使用对应的BI调整参数来调整退避参数和发射功率,可加快完成随机接入,同时减少对网络的干扰。
图1为LTE中基于竞争的随机接入方式的流程示意图;
图2为本申请提供的一种无线通信***架构示意图;
图3为本申请提供的网络设备和用户设备的连接示意图;
图4为本申请提供的用户设备的结构示意图;
图5为本申请提供的网络设备的结构示意图;
图6为本申请提供的随机接入方法实施例一的流程图;
图7为本申请提供的随机接入方法实施例二的流程图;
图8为本申请提供的随机接入方法实施例三的流程图;
图9为本申请提供的用户设备实施例一的结构示意图;
图10为本申请提供的网络设备实施例一的结构示意图;
图11为本申请提供的用户设备实施例二的结构示意图;
图12为本申请提供的网络设备实施例二的结构示意图。
本申请提供的随机接入方案可以应用于无线通信***中,例如新空口(New Radio,NR)场景、长期演进(Long Term Evolution,LTE)下一代场景、无线局域网(Wireless Local Area Networks,WLAN)场景、蓝牙通信等场景中。为描述方便,本申请实施例以新空口场景为例进行说明。图2为本申请提供的一种无线通信***架构示意图,如图2所示,在NR场景中可以包含新空口的核心网,如新空口新无线接入技术核心网(New Radio new redio access technology core,NR_newRAT-Core),新空口的接入网,其中的功能实体主要为网络设备,及连接新空口接入网中的网络设备的用户设备,如图2所示的用户设备1,更多地,还可以包括中继设备及与中继连接的用户设备,如图2所示的用户设备2。中继设备与网络设备通过链路2建立连接,因此相对于网络设备,中继设备也可以视为一种用户设备;中继设备与用户设备2通过链路3建立连接,因此相对于用户设备,中继设备也可以视为一种网络设备。因此,本领域的技术人员可以理解,本发明所述的网络设备也可以包含中继设备,本发明所述的用户设备也可以包含中继设备。其中,网络设备具体可以为gNB、新型无线电基站(New radio eNB)、传输点(transmission and reception point,TRP)、宏基站、微基站、高频基站、LTE宏或微eNB、CPE、WLAN AP、WLAN GO等中的任一种或者某几种的组合,例如,网络设备可以为一个gNB,由该gNB完成本发明中网络设备所涉及的功能,或者,网络设备为gNB与TRP的组合,如由gNB完成本发明中网络设备的资源配置功能,由TRP完成本发明中网络设备的发送接收功能,本发明并不以此为限。用户设备可以为手机、平板、智能汽车、传感设备、物联网(Internet of Things,IOT)设备、客户终端设备(Customer Premise Equipment,CPE)等、中继基站等。
图3为本申请提供的网络设备和用户设备的连接示意图,如图3所示,网络设备可以通过Beamforming技术,如Digital Beamforming或者Analog Beamforming,来形成多个传输波束或者接收波束,各个波束所覆盖的角度可以相同或者不同,不同覆盖角度的波束可以存在重叠部分,例如,网络设备可以用覆盖角度较宽的波束发送控制信息,用覆盖角度较窄的波束发送数据信息。用户设备可以在其中的一个或者多个波束或者波束集或波束组的覆盖范围内接收网络设备发送的信息。用户设备也可以通过Beamforming技术形成多个接收波束,对应于网络设备所使用的下行链路波束,确定使用某一个或者多个接收波束来接收。为描述方便,本发明实施例中所涉及的波束可以指代单个或者多个波束。
因此,可以将网络设备的下行链路传输波束和相应的用户设备的接收波束,或者用户设备的上行链路传输波束和相应的网络设备的接收波束称为一对波束对Beam Pair,由该Beam Pair形成的传输链路称为波束对链路(Beam Pair Link,BPL)。例如,当图3中的网络设备使用波束3作为下行链路传输波束时,用户设备可以确定使用波束6作为相应的接收波束,波束3与波束6形成一对BPL。当网络设备或者用户设备的波束符合波束对应(Beam Correspondence)特征时,可以由传输波束或者接收波束确定对应的接收波束或者传输波束。
本申请中涉及用户设备和网络设备,用户设备指的是例如,5G UE(支持下一代移动通信标准的UE),或者其它5G终端设备。图4为本申请提供的用户设备的结构示意图, 如图4所示例,用户设备100可以包括:一个或多个收发机101,一个或多个天线104,一个或多个处理器102,以及一个或多个存储器103。所述用户设备能执行本申请提供的任一实施例中所述第一用户设备所执行的方法。
网络设备是指例如,5G gNB(下一代移动通信网络里的基站),或传输和接收点(TRP),或其它5G接入网的网络设备(如微基站)。图5为本申请提供的网络设备的结构示意图,如图5示例,网络设备200可以包括:一个或多个收发机201,一个或多个天线204,一个或多个处理器202,一个或多个存储器203,进一步,还可以包括一个或多个其它接口205(例如,光纤链路接口,以太网接口,和/或铜线接口等)。所述网络设备能执行本申请提供的任一实施例中所述网络设备所执行的方法。
本申请中实施例中波束也可以称为beam,波束可以直接替换为beam,或,beam可以直接替换为波束,本文不再赘述;
可选的,波束也可以称为方向,波束可以直接替换为方向,或,方向可以直接替换为波束,比如,第一波束可以替换为第一方向,第一方向可以替换为第一波束,本文不再赘述;
可选的,波束也可以称为空间资源,波束可以直接替换为空间资源,或,空间资源可以直接替换为波束,本文不再赘述;
可选的,波束也可以称为预编码向量,波束可以直接替换为预编码向量,或,预编码向量可以直接替换为波束,本文不再赘述;
网络设备也可以称为gNB,网络设备可以直接替换为gNB,或,gNB可以直接替换为网络设备,本文不再赘述;
可选的,网络设备也可以称为TRP,网络设备可以直接替换为TRP,或,TRP可以直接替换为网络设备,本文不再赘述;
可选的,波束的标识信息也可以称为波束的索引信息,波束的标识信息可以直接替换为波束的索引信息,或,波束的索引信息可以直接替换为波束的标识信息,本文不再赘述。
波束的标识信息也可以称为波束标识信息,波束的标识信息可以直接替换为波束标识信息,或,波束标识信息可以直接替换为波束的标识信息,本文不再赘述。
可选的,波束/beam可以理解为空间资源,可以指具有能量传输指向性/方向性的发送或接收预编码向量。并且,该发送或接收预编码向量能够通过索引信息进行标识。其中,所述能量传输指向性可以指在一定空间位置内,接收经过所述预编码向量进行预编码处理后的信号具有较好的接收功率,如满足接收解调信噪比等;所述能量传输指向性也可以指通过所述预编码向量接收来自不同空间位置发送的相同信号具有不同的接收功率,可以理解为设备使用不同的beam表示设备使用不同的空间资源,可选的,进一步区分上行空间资源和/或下行空间资源,或,用于发送信息的空间资源,用于接收信息的空间资源;
可选的,波束可以理解为通过天线阵列的发送模式所形成的主瓣,比如,beam(of the antenna)is the main lobe of the radiation pattern of an antenna array;
可选地,同一通信设备(比如终端设备或网络设备)可以有不同的预编码向量,不同的设备也可以有不同的预编码向量,即对应不同的波束,不同的波束可以对应不同的方向,可以理解为设备使用不同的beam表示设备使用不同的预先编码向量,可选的,进一步区 分上行预先编码向量,下行预先编码向量,或,区分用于发送信息的预先编码向量,用于接收信息的预先编码向量。
可选的,波束/Beam还可理解为spatial domain transmission filter空间域传输过滤器;设备(比如:网络设备和/或用户设备)使用波束可以替换为设备使用spatial domain transmission filter空间域传输过滤器;
可选的,针对通信设备的配置或者能力,一个通信设备在同一时刻可以使用多个不同的预编码向量中的一个或者多个,即同时可以形成一个或多个波束。波束的信息可以通过索引信息进行标识。可选地,所述索引信息可以对应配置UE的资源标识(identity,ID),比如,所述索引信息可以对应配置的信道状态信息参考信号(Channel status information Reference Signal,CSI-RS)的ID或者资源,也可以对应配置的上行探测参考信号(Sounding Reference Signal,SRS)的ID或者资源。或者,可选地,所述索引信息也可以是通过波束承载的信号或信道显示或隐式承载的索引信息,比如,所述索引信息可以是通过波束发送的同步信号或者广播信道指示该波束的索引信息。
beam pair可以包括发送端的传输波束和接收端的接收波束,或者,也称作上行波束或下行波束。比如,beam pair可以包括gNB Tx beam传输波束或UE Rx beam接收波束,或者,UE Tx beam传输波束或gNB Rx beam接收波束,其中,传输波束还可以理解为传输波束。
可选的,波束的标识信息具体可是波束的ID,基于波束的ID生成的ID,波束的名称,波束的索引,基于波束的索引生成的索引,波束的ID的衍生值,波束的名称的衍生值,波束的索引的衍生值,波束的ID的hash值,波束的名称的hash值,波束的索引的hash值,波束的ID的截断值,波束的名称的截断值,波束的索引的截断值,波束的ID结合明文信息的hash值,波束的名称结合明文信息的hash值,波束的索引结合明文信息的hash值,波束的ID的位表,波束的名称的位表,波束的索引的位表,波束的位表,等其中的一种或多种。
设备不限制使用某个波束(比如,第N个波束,N为设备支持的任意一个波束),为了方便理解,以设备使用第一波束为例;
可选的,比如:设备使用第一波束,可以替换为设备在第一方向;进一步,设备使用第一发送波束,可以替换为设备在第一发送方向,和/或,设备使用第一接收波束,可以替换为设备在第一接收方向;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一空间资源;进一步,设备使用第一发送波束,可以替换为设备使用第一发送空间资源,和/或,设备使用第一接收波束,可以替换为使用第一接收空间资源;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一天线模式;进一步,设备使用第一发送波束,可以替换为设备使用第一发送天线模式,和/或,设备使用第一接收波束,可以替换为使用第一接收天线模式;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一天线模式;进一步,设备使用第一发送波束,可以替换为设备使用第一发送天线模式,和/或,设备使用第一接收波束,可以替换为使用第一接收天线模式;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一天线阵列模式;进一步,设备使用第一发送波束,可以替换为设备使用第一发送天线阵列模式,和/或,设备使用第一接收波束,可以替换为使用第一接收天线阵列模式;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一spatial domain transmission filter空间域传输过滤;
进一步,设备使用第一发送波束,可以替换为设备使用用于发送的第一空间域传输过滤器;和/或,设备使用第一接收波束,可以替换为设备使用用于接收的第一空间域传输过滤器;
可选的,比如:设备使用第一发送波束(或在第一方向),可以替换为设备使用第一发送空间域传输过滤器;和/或,设备使用第一接收波束,可以替换为设备使用第一接收空间域传输过滤器;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一预编码向量;进一步,设备使用第一发送波束,可以替换为设备使用第一发送预编码向量,和/或,设备使用第一接收波束,可以替换为使用第一接收预编码向量;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一权重;进一步,设备使用第一发送波束,可以替换为设备使用第一发送权重,和/或,设备使用第一接收波束,可以替换为使用第一接收权重;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一参数(比如天线阵列中涉及的参数);进一步,设备使用第一发送波束,可以替换为设备使用第一发送参数,和/或,设备使用第一接收波束,可以替换为使用第一接收参数;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一加权参数(比如天线阵列中不同的天线使用不同的参数);进一步,设备使用第一发送波束,可以替换为设备使用第一发送加权参数,和/或,设备使用第一接收波束,可以替换为使用第一接收加权参数;
可选的,比如:设备使用第一波束(或在第一方向),可以替换为设备使用第一波束成形Beamforming(;进一步,设备使用第一发送波束,可以替换为设备使用第一发送波束成形,和/或,设备使用第一接收波束,可以替换为使用第一接收波束成形;
可选的,网络设备所使用的发送beam(或称为,下行beam)对应CRI(CSI-RS Channel State Information Reference Signal resource indicator,信道状态参考信号资源指示),
可选的,比如,第一发送beam(或在第一方向)对应第一CRI,第二发送beam(或在第二方向)对应第二CRI;可选的,网络设备在第一信道状态参考信号资源发送信息,表示所述网络设备使用的是第一发送beam;可选的,用户设备指示所述网络设备的CRI,即,指示了所述网络设备的发送beam,比如,可选的,所述UE指示所述网络设备的第一CRI,即,指示了所述网络设备的第一发送beam;
可选的,网络设备所使用的发送beam(或称为,下行beam)对应SBRI(SSB,synchronization signals block resource indicator,同步信号块资源指示),比如第一发送beam(或在第一方向)对应第一SBRI,第二发送beam(或在第二方向)对应第二SBCRI;可选的,网络设备在第一同步信号块资源发送信息,表示所述网络设备使用的是第一发送 beam;可选的,所述UE指示所述网络设备的SBRI,即,指示了所述网络设备的发送beam,比如,可选的,所述UE指示所述网络设备的第一SBRI,即,指示了所述网络设备的第一发送beam;
可选的,网络设备所使用的发送beam(或称为,下行beam)对应SSB index(SSB,synchronization signals block index,同步信号块索引),比如第一发送beam(或在第一方向)对应第一SSB index,第二发送beam(或在第二方向)对应第二SSB index;
可选的,网络设备在对应第一SSB的资源上发送信息,表示所述网络设备使用的是第一发送beam;可选的,所述UE指示所述网络设备的SSB index,即,指示了所述网络设备的发送beam,比如,可选的,所述UE指示所述网络设备的第一SSB index,即,指示了所述网络设备的第一发送beam;
可选的,网络设备所使用的发送beam(或称为,下行beam)对应SSB time index(SSB,synchronization signals block time index,同步信号块时间索引),比如第一发送beam(或在第一方向)对应第一SSB time index,第二发送beam(或在第二方向)对应第二SSB time index;可选的,网络设备在对应第一SSB time的资源上发送信息,表示所述网络设备使用的是第一发送beam;可选的,所述UE指示所述网络设备的SSB time index,即,指示了所述网络设备的发送beam,比如,可选的,所述UE指示所述网络设备的第一SSB time index,即,指示了所述网络设备的第一发送beam。
本申请中用户设备发送信息到网络设备,也可以称为,用户设备发送信息给网络设备,用户设备发送信息到网络设备可以替换为用户设备发送信息给网络设备,本文不做限定,
具体包括,用户设备向网络设备发送信息,用户设备广播信息到网络设备,用户设备组播信息到网络设备中的任意一种,所述发送的信息不做限定,比如:可以是preamble,用户的标识信息,用户的传输波束信息,数据,管理信息,控制信息请求信息,指示信息,SRS,SR,资源信息等。
本申请中网络设备发送信息到用户设备,也可以称为,网络设备发送信息给用户设备,网络设备发送信息到用户设备可以替换为网络设备发送信息给用户设备,本文不做限定,
具体包括,网络设备向用户设备发送信息,网络设备广播信息到用户设备,网络设备组播信息到用户设备中的任意一种,所述发送的信息不做限定,比如:可以是资源信息,用户的标识信息,用户的传输波束信息,数据,管理信息,控制信息请求信息,指示信息,传输波束分信息等。
比如,第一用户设备使用传输波束发送的前导preamble到网络设备,可以是所述第一用户设备向网络设备发送preamble,第一用户设备广播preamble到网络设备,第一用户设备组播preamble到网络设备中的任意一种;网络设备发送第一资源信息给所述第一用户设备,可以是网络设备向第一用户设备发送preamble,网络设备广播preamble到第一用户设备,网络设备组播preamble到第一用户设备中的任意一种;网络设备发送信息给用户设备,可以是,网络设备给使用标识信息所对应的用户设备发送信息,用户设备所使用的标识信息,用户设备所使用的标识信息可以是:C-RNTI,TC-RNTI,RA-RNTI;比如,网络设备发送资源信息给用户设备,可以是,网络设备给使用标识信息是C-RNTI的用户设备发送资源信息。
图6为本申请提供的随机接入方法实施例一的流程图,如图6所示,本实施例提供的随机接入方法应用在网络设备和用户设备之间,该方法的具体步骤包括:
S101:网络设备针对不同的随机接入过程情况配置对应的BI调整参数和/或功率参数。
在本步骤中,网络设备可以针对用户设备执行随机接入过程的不同情况配置不同的BI调整参数和或功率参数,以便用户设备在不同的情况下可以根据不同的参数进行退避,并调整功率进行随机接入,提高随机接入过程的效率。
S102:用户设备接收网络设备发送的随机接入配置信息;随机接入配置信息包括至少一种随机接入过程情况对应的BI调整参数和/或功率参数。
在本步骤中,网络设备可以通过广播的方式发送该随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的BI调整参数和/或功率参数。网络设备将配置好的随机接入配置信息进行广播,以便每个用户设备能够接收到该随机接入配置信息。
该方案的一种具体实现中,该功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
如果功率参数是功率调整参数,用户设备则需要根据记录的(或者接收到的)功率爬坡步长以及该功率调整参数增加发射功率;如果功率参数是功率爬坡步长,则用户设备可以直接根据该功率爬坡步长增加发射功率。
S103:用户设备在执行第一随机接入过程情况时,根据接收到的BI以及第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向网络设备发送随机接入前导信号进行随机接入。
在本步骤中,应理解执行随机接入过程,第一次执行RA是不使用backoff退避,power ramping功率爬坡的;在RA失败的情况下,重新发起RA的时候,才使用bacoff退避,和power ramping功率爬坡的。
在用户设备执行随机接入过程中,确定执行的是第一随机接入过程情况时,可以根据该第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数进行前导信号的发送,具体的,至少包括以下几种实现方式:
第一种实现方式,用户设备根据接收到的BI以及第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,向网络设备发送随机接入前导信号进行随机接入。
其含义是,用户设备在执行第一随机接入过程情况下,根据接收的BI和第一BI调整参数设置退避参数(backoff parameter),并基于该退避参数选择一个随机退避时间random backoff time等待该随机退避时间之后,用户设备向网络设备发送preamble先导。
第二种实现方式,用户设备根据第一功率参数增加发射功率,并根据增加后的发射功率向网络设备发送随机接入前导信号进行随机接入。
其含义是,用户设备在执行第一随机接入过程情况下,使用根据功率爬坡步长以及第一功率参数增加发射功率之后的发送功率向网络设备发送preamble先导。
第三种实现方式,用户设备根据接收BI以及第一BI调整参数设置退避参数,并根据退避参数选择退避时间,并根据第一功率参数增加发射功率,在等待退避时间之后根据增加后的发射功率向网络设备发送随机接入前导信号进行随机接入。
该种实现方式是前两种方式的结合,即根据第一BI调整参数确定退避时间,也根据第一功率参数进行功率增加,在等到退避时间之后根据增加后的发射功率向网络设备发送preamble先导。
在上述几种实现方式中,应理解,根据第一功率参数进行功率增加包括至少两种情况,当该第一功率参数包括第一功率调整参数时,用户设备需要根据记录的或者接收到的功率爬坡步长和该第一功率调整参数增加发射功率。当该第一功率参数包括第一功率爬坡步长时,用户设备可以直接根据该第一功率爬坡步长增加发射功率。
在该方案的具体实现中,如果用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述用户设备根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到的功率爬坡步长增加后的发射功率,所述用户设备向所述网络设备发送随机接入前导信号进行随机接入。
其含义是,网络设备针对用户设备执行第二随机接入过程情况没有配置第二BI调整参数,和/或,第二功率调整参数或第二功率爬坡步长,那么在进行随机接入时,可以根据接收的BI设置backoff parameter,用户设备基于退避参数选择一个随机退避时间random backoff time等待随机退避时间之后,和/或,用户设备使用记录的或者预先接收的根据功率爬坡步长增加后的发射功率,用户设备向网络设备发送preamble先导。
在用户设备向网络设备发送随机接入前导信号之后,该方案的一种具体实现中还包括一以下过程:
用户设备接收网络设备返回的随机接入响应消息;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则用户设备根据接收到的退避指示BI以及第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向网络设备再次发送随机接入前导信号进行随机接入。
该方案中,用户设备接收到了网络设备返回的随机接入响应消息,如果随机接入响应消息确认成功,则执行后续的RRC连接过程。
如果随机接入响应消息被认为失败的情况下或冲突解决被认为失败的情况下,用户设备可根据接收的BI和第一BI调整参数设置退避参数(backoff parameter),用户设备基于退避参数选择一个随机退避时间random backoff time等待随机退避时间之后,和/或,用户设备使用根据功率爬坡步长和第一功率调整参数增加后的发射功率或使用根据第一功率爬坡步长增加后的发射功率,用户设备向所述网络设备发送preamble先导。
本实施例提供的随机接入方法,网络设备针对用户设备执行随机接入过程的不同情况配置不同的BI调整参数和/或功率参数,在用户执行某一种随机接入过程情况时,例如第一随机接入过程情况,可以根据接收到BI以及该第一随机接入过程情况对应的第一BI调整参数和或第一功率参数,向网络设备发送随机接入前导信号进行随机接入过程,即用户设备可以根据不同的随机接入过程情况选择使用对应的BI调整参数来调整退避参数和发射功率,可加快完成随机接入,同时减少对网络的干扰。
图7为本申请提供的随机接入方法实施例二的流程图,如图7所示,该随机接入 方法的另一种实现方式包括以下步骤:
S201:网络设备针对不同的随机接入过程情况配置对应的BI调整参数和/或功率参数。
在本步骤中,网络设备可以针对用户设备执行随机接入过程的不同情况配置不同的BI调整参数和或功率参数,以便用户设备在不同的情况下可以根据不同的参数进行退避,并调整功率进行随机接入,提高随机接入过程的效率。
S202:用户设备接收网络设备发送的随机接入配置信息;随机接入配置信息包括至少二种随机接入过程情况对应的BI调整参数和/或功率参数。
在本步骤中,网络设备广播随机接入配置信息,所述随机接入配置信息包括多种随机接入过程情况对应的BI调整参数和/或功率参数。网络设备将配置好的随机接入配置信息进行广播,以便每个用户设备能够接收到该随机接入配置信息。
S203:用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,根据接收到的BI以及第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向网络设备发送随机接入前导信号进行随机接入;或者,根据接收到的BI以及功率爬坡步长向网络设备发送随机接入前导信号进行随机接入。
同样的,在该方案中,该第一功率参数包括第一功率调整参数或者第一功率爬坡步长,所述第一功率调整参数或者所述第一功率爬坡步长用于增加发射功率。
该方案的含义是,用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况的条件下,用户设备可以根据第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数进行退避和功率增加,然后发送随机接入前导信号,具体实现方式与实施例一类似。
又或者,用户设备可以根据BI直接设置退避参数,并根据该退避参数选择退避时间,在等待该退避时间之后,和/或,根据记录的功率爬坡步长增加发射功率后,向网络设备发送preamble。在该方案中,该BI为执行所述第二随机接入过程情况时记录的BI。该方案包括以下几种实现方式:
第一种实现方式,所述用户设备根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,向所述网络设备发送随机接入前导信号进行随机接入。
第二种实现方式,所述用户设备根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入。
第三种实现方式,所述用户设备根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入。
又或者,用户设备可以直接将退避参数设置为0,和/或,发射功率不改变,直接向网络设备发送preamble进行随机接入,对此本方案不做限制。
在上述方案中,第一BI调整参数不同于第二BI调整参数;第一功率调整参数不同于第二功率调整参数;第一功率爬坡步长不同于第二功率爬坡步长。
如果在上述方案的具体实现中,网络设备针对所述用户设备执行第一随机接入过程情况没有配置的第一BI调整参数,和/或,第一功率调整参数或第一功率爬坡步长。用户设 备根据所述BI设置backoff parameter,所述用户设备基于所述退避参数选择一个随机退避时间random backoff time等待所述随机退避时间之后和/或使用根据所述功率爬坡步长增加后的发射功率,所述用户设备向所述网络设备发送preamble;或,所述用户设备将所述退避参数设置为0,和/或,所述发射功率不改变。该方案中的BI执行第二随机接入过程情况下记录的BI。
本实施例提供的随机接入方法,网络设备针对用户设备执行不同的随机接入过程情况配置BI调整参数和/或功率调整参数或功率爬坡步长,用户设备可以根据不同的随机接入过程情况选择使用对应的BI调整参数来调整Backoff parameter和发射功率,可加快完成随机接入,同时减少对网络的干扰。
在上述两个实施例中,应理解,用户设备执行随机接入过程的几种情况至少包括以下这些情况,具体如下:
用户设备改变选择网络设备的SSB的情况下执行随机接入(Random Access,RA),用户设备改变选择网络设备的SSB的总次数达到预设阈值的情况下执行RA,用户设备改变使用用户设备发送beam的情况下执行RA,用户设备改变使用用户设备发送beam的总次数达到预设阈值的情况下执行RA,用户设备实施切换过程(hand over)的情况下执行RA,用户设备实施波束失败恢复(beam failure recovery,BFR)的情况下执行RA,用户设备接收到网络设备的指令(PDCCH order)的情况下执行RA,用户设备上行失去同步的情况下执行RA,用户设备的SR counter(scheduling request counter,调度请求计数器)达到最大值的情况下执行RA,用户设备执行RRC(Radio Resource Control无线资源控制)连接重建的情况下执行RA,用户设备第一次接入网络设备的情况下执行RA,用户设备使用第一优先级别服务情况下执行RA,用户设备使用第二优先级别服务情况下执行RA等等。
可选的,比如,第一随机接入过程情况为:用户设备实施BFR的情况下执行RA,网络设备对第一随机接入过程情况配置第一BI调整参数;用户设备在接收到RAR消息中的BI后,根据BI和第一BI调整参数设置backoff parameter,用户设备基于退避参数选择一个随机退避时间(random backoff time),等待随机退避时间之后,用户设备向网络设备发送preamble。
可选的,再比如,第一随机接入过程情况为:用户设备实施BFR的情况下执行RA,网络设备对第一随机接入过程情况配置第一功率调整参数;用户设备在接收到power rampinig step(功率爬坡步长)后,根据功率爬坡步长和第一功率调整参数增加发射功率(比如,增加的发射功率为基于功率爬坡步长和第一功率调整参数计算得出的功率,比如,功率爬坡步长乘以第一功率调整参数,增加的发射功率为之前的发送功率加上增加的发射功率),用户设备使用增后的发射功率,用户设备向网络设备发送preamble。
可选的,再比如,第一随机接入过程情况为:用户设备实施BFR的情况下执行RA,网络设备对第一随机接入过程情况配置第一功率爬坡步长;用户设备根据第一功率爬坡步长增加发射功率(比如,增加后的发射功率为之前的发送功率加上第一功率爬坡步长),用户设备使用增加后的发射功率,用户设备向网络设备发送preamble。
可选的,比如,第二随机接入过程情况为:用户设备上行失去同步的情况下执行RA, 网络设备对第二随机接入过程情况配置第二BI调整参数;用户设备在接收到RAR消息中的BI后,根据BI和第二BI调整参数设置backoff parameter,用户设备基于退避参数选择一个随机退避时间(random backoff time),等待随机退避时间之后,用户设备向网络设备发送preamble。
可选的,再比如,第二随机接入过程情况为:用户设备上行失去同步的情况下执行RA,网络设备对第二随机接入过程情况配置第二功率调整参数;用户设备在接收到power rampinig step(功率爬坡步长)后,根据功率爬坡步长和第二功率调整参数增加发射功率(比如,增加的发射功率为基于功率爬坡步长和第二功率调整参数计算得出的功率,比如,功率爬坡步长乘以第二功率调整参数,增加的发射功率为之前的发送功率加上增加的发射功率),用户设备使用增后的发射功率,用户设备向网络设备发送preamble。
可选的,再比如,第二随机接入过程情况为:用户设备上行失去同步的情况下执行RA,网络设备对第一随机接入过程情况配置第二功率爬坡步长;用户设备根据第二功率爬坡步长增加发射功率(比如,增加后的发射功率为之前的发送功率加上第二功率爬坡步长),用户设备使用增加后的发射功率,用户设备向网络设备发送preamble。
图8为本申请提供的随机接入方法实施例三的流程图,如图8所示,本实施例提供的随机接入方法包括以下步骤:
S301:用户设备选择网络设备发送的第一SSB向网络设备发送随机接入前导信号。
在本步骤中,网络设备针对不同的SSB(不同的SSB对应不同的发送波束,第一发送波束对应第一SSB)配置不同的BI,即第一SSB对应第一BI,和/或网络设备针对不同的SSB配置不同的功率爬坡步长,即第一SSB对应第一功率爬坡步长。
用户设备需要进行随机接入时候,选择第一SSB,并根据选择的该第一SSB向网络设备发送随机接入前导信号,具体的,用户设备使用第一SSB对应的PRACH资源向所述网络设备发送所述随机接入前导信号。网络设备接收用户设备发送的随机接入前导信号,并识别出所述用户设备选择了第一同步信号块SSB。具体的,网络设备接收用户设备通过所述第一SSB对应的PRACH资源发送的所述随机接入前导信号。
该方案中,UE可至少根据SSB的参考信号接收功率(Reference Signal Received Power,RSRP)进行选择,比如,选择RSRP最大的SSB;或,选择RSRP大于某个阈值的SSB。
S302:网络设备向用户设备返回随机接入响应;随机接入响应包括第一SSB对应的第一BI和/或第一功率爬坡步长。
在本步骤中,网络设备接收第一用户发送的preamble先导,用户设备选择第一SSB同步信号块,网络设备发送RAR消息,RAR消息中携带第一BI和/或第一功率爬坡步长,第一BI和/或第一功率爬坡步长对应第一SSB,第一SSB为所述网络设备发送的。用户设备接收所述网络设备返回的随机接入响应。
S303:在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,用户设备根据第一BI和/或第一功率爬坡步长向网络设备再次发送随机接入前导信号进行随机接入。
在本步骤中,在随机接入响应消息被认为失败的情况下或者冲突解决被认为失败的情 况下,用户设备可以基于该第一SSB对应的第一BI确定退避参数,并根据该退避参数选择一个随机的退避时间,在等到该退避时间之后,和/或,使用基于基于功率爬坡步长增加的发射功率,向网络设备发送随机接入前导信号。具体包括以下几种实现方式:
第一种实现方式,用户设备基于BI选择退避时间,并在等到所述退步时间之后,向所述网络设备再次发送随机接入前导信号进行随机接入。
第二种实现方式,用户设备基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率向所述网络设备再次发送随机接入前导信号进行随机接入;
第三种实现方式,用户设备基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所述退步时间之后根据增加后的发射功率向所述网络设备再次发送随机接入前导信号进行随机接入。
在该方案的具体实现中,网络设备还可以接收用户设备通过第二SSB发送的随机接入前导信号;所述网络设备根据所述随机接入前导信号,向所述用户设备返回随机接入响应;所述随机接入响应包括所述第二SSB对应的第二BI和/或第二功率爬坡步长。具体的,网络设备接收所述用户设备通过所述第二SSB对应的PRACH资源发送的所述随机接入前导信号。
或者,网络设备还可以接受第二用户设备发送的随机接入前导信号,第二用户设备选择第二SSB,网络设备发送RAR消息,RAR消息中携带第二BI和/或第二功率爬坡步长,所述第二BI和/或第二功率爬坡步长对应所第二SSB,所述第二SSB为所述网络设备发送的,所述第二BI不同于所述第一BI和/或所述第一功率爬坡步长不同于第二功率爬坡步长。
网络设备使用第一发送波束对应所述第一SSB,使用第二发送波束对应所述第二SSB。第一发送波束覆盖的用户设备数目不同于第二发送波束覆盖的用户数目。比如,第一发送波束cover用户数目大于所述第二发送波束cover的用户数目,所述第一BI值大于第二BI值。再比如:第一发送波束cover用户数目小于所述第二发送波束cover的用户数目,所述第一功率爬坡步长值大于第二功率爬坡步长值。
本实施例提供的随机接入方法,针对不同的波束覆盖的用户数目,对不同的SSB配置不同的BI和/或功率爬坡步长,避免了不同的拥塞程度的UE使用相同的BI执行退避过程,加快完成随机接入过程,同时减少对网络的干扰。
除了上述几个实施例,本申请还提供另外一种随机接入方案,包括:用户设备通过使用第一传输波束和/或第一随机接入资源向网络设备发送随机接入前导信号,所述随机接入前导信号用于发起随机接入过程,接收所述网络设备发送的BI。所述用户设备根据所述BI设置退避参数,然后用户设备在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,执行以下方案中的任一种:其中,
方案A:若所述用户设备当前使用的波束为所述第一传输波束,或,所述用户设备当前使用第一随机接入资源,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变,或,若所述用户设备的发送功率达到最大值,则所述第一用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退 避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案B:若所述用户设备当前使用的波束为第二传输波束,或,所述用户设备当前使用第二随机接入资源,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后没有发生过改变,或,若所述用户设备的功率爬坡计数器发生重置,则所述用户设备将所述退避参数设置为0;
方案C:若所述用户设备的发送功率达到最大值并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案D:若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变并且所述用户设备当前使用的波束为所述第一传输波束,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案E:若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后没有发生过改变并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备将所述退避参数设置为0;
方案F:若所述用户设备的功率爬坡计数器发生重置并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备将所述退避参数设置为0;
方案G:若所述用户设备当前使用的波束为第二传输波束,且所述第二传输波束为所述用户设备之前使用过的传输波束,则所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;
方案H:所述用户设备为所述第一传输波束维持一个计数器,所述用户设备使用所述所述第一传输波束发送一次先导,所述计数器加1,所述用户设备判断所述计数器没有达到最大值的情况下,所述第一用户设备将所述退避参数设置为0;
方案I:所述用户设备为所述第一传输波束维持一个计数器,所述用户设备判断所述计数器达到最大值的情况下,所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程。
在一种具体实现方式中,所述用户设备当前使用的波束为第一传输波束,或,所述用户设备当前使用第一随机接入资源,则所述方法还包括:
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为所述第一传输波束;
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用随机接入资源为所述第一随机接入资源。
可选的,所述用户设备当前使用的波束为第二传输波束,或,用户设备当前使用第二随机接入资源,则所述方法还包括:
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为所述第二传输波束;
所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用随机接入资源为所述第二随机接入资源。
可选的,所述用户设备的发送功率达到最大值,则所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后所述第一用户设备的发送功率达到最大值。
可选的,所述第一用户设备的功率爬坡计数器发生重置,则所述用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后所述用户设备的功率爬坡计数器发生重置。
下面通过几种具体的实现方式对该方案进行说明:在下面的实现方式中,随机接入过程中的第一消息可以是随机接入过程中的Msg1消息(如图1中用户设备发送的包含random access preamble信息的消息),或,对Msg1消息进行修改后的消息;随机接入过程中的第二消息可以是Msg2消息(如图1中网络设备发送的RAR消息),或,修改的Msg2消息(即对RAR消息进行修改后的消息);随机接入过程中的第三消息可以随机接入过程中的Msg3(如图1中用户设备发送的Msg3消息),或,对随机接入过程中的第三消息进行修改后的消息;随机接入过程中的第四消息可以是Msg4消息(如图1中网络设备发送的包含contention resolution信息的消息),或,对Msg4消息进行修改后的消息。
第一种实现方式:
网络设备发送RAR消息,携带BI;可选的:网络设备发送RAR消息之前,网络设备接收到preamble,preamble可以是第一用户设备使用第一beam发送的,或,第二用户设备发送的;第一用户设备不同于第二用户设备;
第一用户设备接收RAR消息,获得RAR消息中的BI,UE根据BI设置backoff parameter;可选的,第一用户设备在接收RAR消息之前第一用户设备使用第一beam(波束)发送preamble到网络设备侧;
可选的,第一用户设备利用第一资源发送preamble(可选的,第一资源可称之为PRACH资源,或,称之为随机接入(random access,RA)资源),第一用户设备选择第一资源对应第一用户设备选择网络设备的第一发送波束,第一用户设备使用第一beam,第一beam为第一用户设备的发送波束。
在上述获得BI的基础上,第一用户设备,在随机接入响应消息接收被认为失败(Random Access Response reception is considered not successful)的第一情况下(第一情况又可以称之为:第一用户设备准备再次发起随机接入过程的情况下,或,第一用户设备准备再次发送preamble的情况下),或,冲突解决被认为失败的第二情况下(Contention Resolution is considered not successful),执行以下动作(以上2种情况其中一种情况出现时):
如果第一用户设备使用第一beam,第一用户设备基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程(第一用户设备发起随机接入过程可替换为:第一用户设备发送preamble,全文不做限定)。
第一用户设备的具体执行动作:
第一用户设备从0到Backoff Parameter Value区间选择一个数字X作为退避时间 (backoff time),在等待X时间后,第一用户发起随机接入过程(或,在等待X时间后,第一用户发送preamble);
X是大于等于0小于等于Backoff Parameter Value,X的时间单位为ms(毫秒),或,其他时间单位;
可选的,该方案中,发送preamble可以不同于前述开始时第一用户设备使用第一波束发送的preamble。第一用户设备可以换另外一个preambel使用。(有利于减少冲突的出现)
如果第一用户设备使用第二beam,第二beam不同与第一beam,第一用户设备将退避参数(backoff parameter)设置为0(第一用户设备将退避参数(backoff parameter)设置为0,可替换为,第一用户设备在等待0ms发起随机接入过程或第一用户设备在等待0ms发送preamble,全文不做限定)。
第一用户设备的具体执行动作:
第一用户设备从0到Backoff Parameter Value区间选择一个数字X作为退避时间(backoff time),在等待X时间后,第一用户发起随机接入过程(或,在等待X时间后,第一用户发送preamble);
X是大于等于0小于等于Backoff Parameter Value,X的时间单位为ms(毫秒),或,其他时间单位;,该方案中,应理解第一用户设备可以是不支持beam correspondence(波束一致性)的用户设备。第一beam,第二beam为第一用户设备的发送波束;
第一用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为第一传输波束。第一用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为第二传输波束。
在上述方案中,可选择性的执行,第一用户设备获得网络设备指示使用切换发送波束后将退避参数设置为0的操作。
网络设备在RAR中指示是否使用本申请定义的操作。比如,在RAR的subheader的保留位中占用1bit(BI指示)指示信息,bit值设置为1时指示接收到RAR消息的UE在切换发送波束后可以执行将退避参数设置为0的操作,进一步的,网络设备根据当前网络的负载情况自行判断是否使用指示信息。可选的,第一用户设备通过源网络设备获得目标网络设备指示的是否使用切换发送波束后将退避参数设置为0的操作,第一用户设备对目标网络设备发起随机接入过程。
该实现方式中,针对不同的beam的使用情况,UE根据具体情况判断是否执行退避,而不是盲目的执行退避,避免了UE设备盲目的等待,加快了UE设备接入网络设备的过程。
第二种实现方式:
首先,网络设备发送RAR消息,携带BI。可选的:网络设备发送RAR消息之前,网络设备接收到preamble,preamble可以是第一用户设备使用第一beam发送的,或,第二用户设备发送的,第一用户设备不同于第二用户设备。
第一用户设备接收RAR消息,获得RAR消息中的BI,UE根据BI设置backoff parameter。可选的,第一用户设备在接收RAR消息之前第一用户设备使用第一beam(波束)发送preamble到网络设备侧。
可选的,第一用户设备利用第一资源发送preamble。第一资源对应网络设备的第一发送波束。第一用户设备选择第一资源对应第一用户设备选择网络设备的第一发送波束,第一用户设备使用第一beam,第一beam为第一用户设备的发送波束。
其次,第一用户设备,在随机接入响应消息接收被认为失败(Random Access Response reception is considered not successful)的第一情况下,或,第一用户设备准备再次发起随机接入过程的第二情况下,或,第一用户设备准备再次发送preamble的第三情况下,执行以下动作(以上3种情况其中一种情况出现时):
如果第一用户设备使用第一资源,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
在该方案中,第一用户设备的具体执行动作类似第一种实现方式中第一用户设备的具体执行动作。
如果第一用户设备选择第一资源对应的网络设备的第一发送波束,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
第一资源与网络设备所使用的第一beam之间存在对应关系,或,称之为,第一资源与网络设备所使用的第一beam的标识信息之间存在对应关系。
如果第一用户设备使用第二资源,第二资源不同与第一资源(第一资源为前述第一用户设备利用第一资源发送preamble时,使用的第一资源),第一用户设备将退避参数(backoff parameter)设置为0。或,第一用户设备在等待0ms发起随机接入过程或第一用户设备在等待0ms发送preamble。
如果第一用户设备选择第二资源对应的网络设备的第二beam,第二资源不同与第一资源(第一资源对应网络设备的第一发送波束,第一资源为前述的第一用户设备利用第一资源发送preamble时,使用的第一资源)第一用户设备将退避参数(backoff parameter)设置为0;或,第一用户设备在等待0ms发起随机接入过程或第一用户设备在等待0ms发送preamble。
补充说明:第一资源与网络设备所使用的第一beam之间存在对应关系,或,称之为,第一资源与网络设备所使用的第一beam的标识信息之间存在对应关系。第二资源与网络设备所使用的第二beam之间存在对应关系,或,称之为,第二资源与网络设备所使用的二发送波束的标识信息之间存在对应关系。
第一用户设备可以是不支持beam correspondence(波束一致性)的用户设备。第一beam,第二beam为第一用户设备的发送波束;
第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble,退避参数根据第一用户设备接收到的多次的RAR中最新的一次RAR中的BI进行设置。比如,第一用户设备使用第一beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数,再比如,第一用户设备使用第二beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数。
可选的,该第一用户设备获得网络设备指示是否支持第一用户设备切换使用的PRACH资源后将退避参数设置为0的操作;或,第一用户设备切换选择的网络设备的发送波束后将退避参数设置为0的操作。
可选的,网络设备在RAR中指示是否使用本发明定义的操作;比如,在RAR的subheader的保留位中占用1bit(BI指示)指示信息,bit值设置为1时指示接收到RAR消息的UE在切换使用的PRACH资源后将退避参数设置为0的操作;或,第一用户设备切换选择的网络设备的发送波束后将退避参数设置为0的操作,进一步的,网络设备根据当前网络的负载情况自行判断是否使用指示信息;
可选的,第一用户设备通过源网络设备获得目标网络设备指示的是否支持第一用户设备切换使用的PRACH资源后将退避参数设置为0的操作;或,第一用户设备切换选择的网络设备的发送波束后将退避参数设置为0的操作,第一用户设备对目标网络设备发起随机接入过程。
该实施方式,针对不同的PRACH资源的使用情况,或,UE选择的网络设备的发送波束情况,UE根据具体情况判断是否使用执行退避,而不是盲目的执行退避,避免了UE设备盲目的等待,加快了UE设备接入网络设备的过程。
第三种实现方式:
前面的步骤与前面两个实施方式中类似,第一用户设备在随机接入响应消息接收被认为失败(Random Access Response reception is considered not successful)的第一情况下,或,第一用户设备准备再次发起随机接入过程的第二情况下,或,第一用户设备准备再次发送preamble的第三情况下,执行以下动作(以上3种情况其中一种情况出现时):
如果第一用户设备使用第一资源,第一用户设备使用第一beam,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
如果第一用户设备选择第一资源对应的网络设备的第一发送波束,第一用户设备使用第一beam,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble;
补充说明:第一资源与网络设备所使用的第一beam之间存在对应关系,或,称之为,第一资源与网络设备所使用的第一beam的标识信息之间存在对应关系。
如果第一用户设备使用第二资源,如果第一用户设备使用第二beam,第二beam不同与第一beam,第二资源不同与第一资源(第一资源为步骤201中第一用户设备利用第一资源发送preamble时使用的第一资源),第一用户设备将退避参数(backoff parameter)设置为0;或,第一用户设备在等待0ms发起随机接入过程或第一用户设备在等待0ms发送preamble;
如果第一用户设备选择第二资源对应的网络设备的第二beam,如果第一用户设备使用第二beam,第二beam不同与第一beam,第二资源不同与第一资源(第一资源对应网络设备的第一发送波束,第一资源为步骤201中第一用户设备利用第一资源发送preamble时,使用的第一资源)第一用户设备将退避参数(backoff parameter)设置为0;或,第一 用户设备在等待0ms发起随机接入过程或第一用户设备在等待0ms发送preamble。
补充说明:第一资源与网络设备所使用的第一beam之间存在对应关系,或,称之为,第一资源与网络设备所使用的第一beam的标识信息之间存在对应关系。
第二资源与网络设备所使用的第二beam之间存在对应关系,或,称之为,第二资源与网络设备所使用的二发送波束的标识信息之间存在对应关系。
第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble,退避参数根据第一用户设备接收到的多次的RAR中最新的一次RAR中的BI进行设置。比如,第一用户设备使用第一beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数,再比如,第一用户设备使用第二beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数。
第一用户设备更改发送波束(比如,更改发送波束可以是从使用第一beam更改为使用第二beam)。
补充说明:可选的第一用户设备的功率爬坡计数器counter of power ramping在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变。可选的,第一用户设备的功率爬坡计数器counter of power ramping在随机接入响应消息接收被认为失败或冲突解决被认为失败后没有发生过改变。
上述实现方式中,同时考虑PRACH资源和用户设备的发送beam这两个因素,不同的PRACH资源的使用和用户设备的发送beam使用情况,或,UE选择的网络设备的发送波束情况和用户设备的发送beam使用情况,UE根据具体情况判断是否使用执行退避,而不是盲目的执行退避,避免了UE设备盲目的等待,加快了UE设备接入网络设备的过程。
第四种实现方式:
前面的步骤与前述几个实现方式类似,第一用户设备在随机接入响应消息接收被认为失败(Random Access Response reception is considered not successful)的第一情况下,或,第一用户设备准备再次发起随机接入过程的第二情况下,或,第一用户设备准备再次发送preamble的第三情况下,执行以下动作(以上3种情况其中一种情况出现时):
如果第一用户设备的功率爬坡计数器(counter of power ramping)发生改变(增加/减少),或,第一用户设备的发送功率(第一用户设备的发送功率可以是前导接收目标功率PREAMBLE_RECEIVED_TARGET_POWER)达到了最大值(从网络设备侧获得第一用户设备的发送功率的最大值),第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble;
可选的,在随机接入响应消息接收被认为失败的情况下,功率爬坡计数器加1(即,功率爬坡计数器对应的数值加1)。
进一步可选的,第一用户设备的发送功率达到了最大值,第一用户设备更改发送波束(比如,更改发送波束可以是从使用第一beam更改为使用第二beam)的情况下,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time), 在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble;
进一步可选的,如果第一用户设备的功率爬坡计数器发生改变,第一用户设备更改发送波束的情况下,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
进一步可选的,如果第一用户设备的功率爬坡计数器发生改变,第一用户设备没有更改发送波束的情况下,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
如果第一用户设备的功率爬坡计数器(counter of power ramping)没有发生改变,或,第一用户设备的功率爬坡计数器发生重置(reset),第一用户设备将退避参数(backoff parameter)设置为0;或,第一用户设备在等待0ms发起随机接入过程,或,第一用户设备在等待0ms发送preamble。
第一用户设备更改发送波束的时候,counter值不发生改变。
如果第一用户设备使用第二资源,第二资源不同与第一资源(第一资源为第一用户设备利用第一资源发送preamble时,使用的第一资源),第一用户设备将功率爬坡计数器设置为0。
如果第一用户设备的功率爬坡计数器没有发生改变,第一用户设备更改发送波束的情况下,第一用户设备将退避参数(backoff parameter)设置为0,或,第一用户设备在等待0ms发起随机接入过程,或,第一用户设备在等待0ms发送preamble。
如果第一用户设备的功率爬坡计数器没有发生改变,第一用户设备没有更改发送波束的情况下,第一用户设备将退避参数(backoff parameter)设置为0;或,第一用户设备在等待0ms发起随机接入过程,或,第一用户设备等待0ms发送preamble。如果第一用户设备的功率爬坡计数器(counter of power ramping)没有发生改变,第一用户设备没有更改发送波束的情况下,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble;
补充说明:第一用户设备可以是不支持beam correspondence(波束一致性)的用户设备。第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble,退避参数根据第一用户设备接收到的多次的RAR中最新的一次RAR中的BI进行设置。比如,第一用户设备使用第一beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数,再比如,第一用户设备使用第二beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数。第一用户设备更改发送波束(比如,更改发送波束可以是从使用第一beam更改为使用第二beam)。
在该实现方式中,针对功率爬坡计数器(counter of power ramping)是否发生改变情况,UE根据具体情况判断是否使用执行退避,而不是盲目的执行退避,避免了UE设备 盲目的等待,加快了UE设备接入网络设备的过程。
第五种实现方式:
第一用户设备在随机接入响应消息接收被认为失败(Random Access Response reception is considered not successful)的第一情况下,或,第一用户设备准备再次发起随机接入过程的第二情况下,或,第一用户设备准备再次发送preamble的第三情况下,执行以下动作(以上3种情况其中一种情况出现时):
如果第一用户设备使用第一beam,或,第一用户设备的发送功率(第一用户设备的发送功率可以是前导接收目标功率PREAMBLE_RECEIVED_TARGET_POWER)达到了最大值(可选的,第一用户设备从网络设备侧获得第一用户设备的发送功率的最大值),第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
进一步可选的,第一用户设备的发送功率达到了最大值,第一用户设备更改发送波束的情况下,第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
如果第一用户设备使用第二beam,第二beam不同与第一beam,第一用户设备将退避参数(backoff parameter)设置为0;或,第一用户设备在等待0ms发起随机接入过程,或,第一用户设备在等待0ms发送preamble。
如果第一用户设备使用第二beam,第二beam不同与第一beam,功率爬坡计数器(counter of power ramping)没有发生改变(增加/减少),第一用户设备将退避参数(backoff parameter)设置为0;或,第一用户设备在等待0ms发起随机接入过程,或,第一用户设备在等待0ms发送preamble。
如果第一用户设备使用第二beam,第二beam不同与第一beam功率爬坡计数器(counter of power ramping)发生改变(增加/减少),第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
补充说明:第一用户设备可以是不支持beam correspondence(波束一致性)的用户设备。第一用户设备,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble,退避参数根据第一用户设备接收到的多次的RAR中最新的一次RAR中的BI进行设置。比如,第一用户设备使用第一beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数,再比如,第一用户设备使用第二beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数。
第一用户设备更改发送波束(比如,更改发送波束可以是从使用第一beam更改为使用第二beam)。
本实现方式提供的技术方案中,针对counter是否改变和不同的beam的使用情况,UE根据具体情况判断是否使用执行退避,而不是盲目的执行退避,避免了UE设备盲目 的等待,加快了UE设备接入网络设备的过程。
第六种实现方式:
如果第一用户设备使用第二beam,第二beam不同与第一beam,判断第二beam是否为没有用过的发送波束。
如果第二beam没有使用过,第一用户设备将backoff parameter设置为0ms。
如果第二beam使用过,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
或,如果第一用户设备使用第二beam,判断第二beam是否为波束扫描beam sweap(比如,波束扫描为第一用户设备有N个beam,第一用户设备使用波束1,波束2,直到波束N为beam sweap)中没有用过的发送波束。
如果第二beam没有使用过,第一用户设备将backoff parameter设置为0ms。
如果第二beam为波束扫描中使用过,基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
补充说明:第一用户设备可以是不支持beam correspondence(波束一致性)的用户设备。第一用户设备基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble,退避参数根据第一用户设备接收到的多次的RAR中最新的一次RAR中的BI进行设置。比如,第一用户设备使用第一beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数,再比如,第一用户设备使用第二beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数。
第一用户设备更改发送波束(比如,更改发送波束可以是从使用第一beam更改为使用第二beam)。
本实施方式提供的方案中,为了防止用户设备不断的切换beam,不断的将backoff参数设置为0,防止了用户设备作弊。
第七种实现方式:
第一用户设为每个beam维持一个计时器timer,比如第一用户设使用beam(j)维持一个timer(j),使用beam(j)发送preamble之后或之时或之前,timer(j)初始为Xms并开始减少,如果第一用户设备在timer(j)时间X减为0ms之前,再次使用beam(j),基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
如果timer(j)时间X减为0ms,使用beam(j),第一用户设备将backoff parameter设置为0;
timer(j)可以是第一beam,或,第二beam。
规则中,timer(j)可以初始化为0ms,并不断增加,如果第一用户设在timer(j)时间增加到Xms之前,再次使用beam(j),基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程 或第一用户设备发送preamble。
如果timer(j)时间增加到X,再次使用beam(j),第一用户设备将backoff parameter设置为0;timer(j)可以是第一beam,或,第二beam。
第一用户设为每个发送beam维持一个计时器counter,比如第一用户设使用beam(j)维持一个counter(j),使用beam(j)发送preamble之后或之时或之前,counter(j)初始为X,使用beam(j)发送一次preamblecounter(j)减1,如果第一用户设在counter(j)时间X减为0之前,再次使用beam(j),基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
如果counter(j)时间X减为0,使用beam(j),第一用户设备将backoff parameter设置为0;timer(j)可以是第一beam,或,第二beam。
规则中,counter(j)可以初始化为0,使用beam(j)发送一次preamblecounter(j)加1,如果第一用户设在counter(j)增加到X之前(X为最大值),再次使用beam(j),基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble。
如果counter(j)时间增加到X,使用beam(j),第一用户设备将backoff parameter设置为0;timer(j)可以是第一beam,或,第二beam。
补充说明:第一用户设备可以是不支持beam correspondence(波束一致性)的用户设备。
第一用户设备基于退避参数(backoff parameter)选择一个随机退避时间(random backoff time),在等待随机退避时间后,第一用户设备发起随机接入过程或第一用户设备发送preamble,退避参数根据第一用户设备接收到的多次的RAR中最新的一次RAR中的BI进行设置。比如,第一用户设备使用第一beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数,再比如,第一用户设备使用第二beam接收到的RAR为最新的一次RAR,第一用户设备根据RAR中的BI进行设置退避参数。
第一用户设备更改发送波束(比如,更改发送波束可以是从使用第一beam更改为使用第二beam)
本实现方式提供的技术方案,为了防止用户设备不断的切换beam,不断的将backoff参数设置为0,防止了用户设备作弊。
在上述几种实现方式中,第一用户设备的功率爬坡计数器counter of power ramping在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变。
可选的,第一用户设备的功率爬坡计数器counter of power ramping在随机接入响应消息接收被认为失败或冲突解决被认为失败后没有发生过改变。
可选的,第一用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为第一传输波束。
可选的,第一用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后使用的波束为第二传输波束。
可选的,第一用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后 第一用户设备的发送功率达到最大值。
可选的,第一用户设备在随机接入响应消息接收被认为失败或冲突解决被认为失败后第一用户设备的功率爬坡计数器发生重置。
上述几个实施例公开的随机接入方法中,针对不同的beam的使用情况,不同的PRACH资源使用情况,功率爬坡计数器变化情况等因素中的一项或多项所形成的各种情况,UE根据具体情况判断是否执行退避,而不是盲目的执行退避,避免了UE设备盲目的等待,加快了UE设备接入网络设备的过程。该方案还可以应用到WiFi,蓝牙,LiFi等通信领域。
图9为本申请提供的用户设备实施例一的结构示意图,如图9所示,该用户设备10包括:接收模块11,处理模块12以及发送模块13;
所述接收模块11用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述发送模块13用于在所述处理模块执行第一随机接入过程情况时,根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
可选的,所述接收模块11还用于接收所述网络设备返回的随机接入响应消息;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则所述处理模块还用于根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述处理模块12具体用于:
根据接收到的所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据所述第一功率参数增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,并根据所述第一功率参数增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述处理模块12还用于根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到的功率爬坡步长增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
上述任一实施例提供的用户设备,用于执行前述任一方法实施例中的用户设备侧的技术方案,其实现原理和技术效果类似,在此不再赘述。
可选的,在该用户设备10的另一种应用过程中;
所述接收模块11用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少二种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,所述处理模块12根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送模块13向所述网络设备发送随机接入前导信号进行随机接入;或者,所述处理模块根据接收到的BI以及功率爬坡步长通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述处理模块12具体用于:
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
本实施例提供的用户设备,用于执行前述任一方法实施例中的用户设备侧的技术方案,其实现原理和技术效果类似,在此不再赘述。
图10为本申请提供的网络设备实施例一的结构示意图,如图10所示,该网络设备20包括:
处理模块21,用于针对不同的随机接入过程情况配置对应的退避指示BI调整参数和/或功率参数;
发送模块22,用于发送随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
本实施例提供的网络设备,用于执行前述任一方法实施例中的网络设备侧的技术方案,其实现原理和技术效果类似,在此不再赘述。
图11为本申请提供的用户设备实施例二的结构示意图,如图11所示,该用户设备30包括:
发送模块31,用于选择网络设备发送的第一SSB向网络设备发送随机接入前导信号;
接收模块32,用于接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长;
处理模块33,用于在随机接入响应消息接收被认为失败的情况下或冲突解决被认 为失败的情况下,根据所述第一退避指示BI和/或第一功率爬坡步长通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述发送模块31具体用于使用所述第一SSB对应的PRACH资源向所述网络设备发送所述随机接入前导信号。
可选的,所述处理模块33具体用于:
基于所述BI选择退避时间,并在等到所述退步时间之后,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所述退步时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
本实施例提供的用户设备,用于执行前述任一方法实施例中的用户设备侧的技术方案,其实现原理和技术效果类似,在此不再赘述。
图12为本申请提供的网络设备实施例二的结构示意图,如图12所示,该网络设备40,包括:
接收模块41,用于接收用户设备发送的随机接入前导信号,并识别出所述用户设备选择了第一同步信号块SSB;
发送模块42,用于根据所述随机接入前导信号,向所述用户设备返回随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长。
可选的,所述接收模块41具体用于接收所述用户设备通过所述第一SSB对应的PRACH资源发送的所述随机接入前导信号。
本实施例提供的网络设备,用于执行前述任一方法实施例中的网络设备侧的技术方案,其实现原理和技术效果类似,在此不再赘述。
本申请还提供一种用户设备,所述方法包括:接收器,处理器,发送器,以及存储器,存储器用于存储计算机程序;
所述接收器用于接收网络设备广播的随机接入配置信息;所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述发送器用于在所述处理器执行第一随机接入过程情况时,根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
可选的,所述接收器还用于接收所述网络设备返回的随机接入响应消息;
在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则所述处理器还用于根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第 一BI调整参数和/或第一功率参数,通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述处理器具体用于:
根据接收到的所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据所述第一功率参数增加发射功率,并根据增加后的发射功率通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,并根据所述第一功率参数增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述处理器还用于根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到的功率爬坡步长增加后的发射功率,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
本申请还提供一种用户设备,包括:接收器,处理器,发送器以及存储器,所述存储器用于存储计算机程序;
所述接收器用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少二种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;
所述用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,所述处理器根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;或者,所述处理器根据接收到的BI以及功率爬坡步长通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
可选的,所述处理器具体用于:
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入;
或者,
根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送器向所述网络设备发送随机接入前导信号进行随机接入。
本申请还提供一种网络设备,包括:用于存储计算机程序的存储器;
处理器,用于针对不同的随机接入过程情况配置对应的退避指示BI调整参数和/或功率参数;
发送器,用于广播随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数。
可选的,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
本申请还提供一种用户设备,包括:用于存储计算机程序的存储器;
发送器,用于选择预先配置的第一SSB向网络设备发送随机接入前导信号;
接收器,用于接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长;
处理器,用于在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,根据所述第一退避指示BI和/或第一功率爬坡步长通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入。
可选的,所述发送器具体用于使用所述第一SSB对应的PRACH资源向所述网络设备发送所述随机接入前导信号。
可选的,所述处理器具体用于:
基于所述BI选择退避时间,并在等到所述退步时间之后,通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入;
或者,
基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所述退步时间之后根据增加后的发射功率,通过所述发送器向所述网络设备再次发送随机接入前导信号进行随机接入。
本申请还提供一种网络设备,包括:用于存储计算机程序的存储器;
接收器,用于接收用户设备通过第一SSB发送的随机接入前导信号;
发送器,用于根据所述随机接入前导信号,向所述用户设备返回随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长。
可选的,所述接收器具体用于接收所述用户设备通过所述第一SSB对应的PRACH资源发送的所述随机接入前导信号。
在上述用户设备或者网络设备的具体实现中,处理器的数量为至少一个,用来执行存储器存储的执行指令,即计算机程序。使得网络设备通过通信接口与用户设备之间进行数据交互,来执行上述的各种实施方式提供的随机接入方法,可选的,存储器还可以集成在处理器内部。
本申请还供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用于实现任一实施例中用户设备侧的随机接入方法。
本申请还提供一种存储介质,所述存储介质用于存储计算机程序,所述计算机程序用 于实现任一实施例中网络设备侧的随机接入方法。
在上述的用户设备或者网络设备的具体实现中,应理解,处理器可以是中央处理单元(英文:Central Processing Unit,简称:CPU),还可以是其他通用处理器、数字信号处理器(英文:Digital Signal Processor,简称:DSP)、专用集成电路(英文:Application Specific Integrated Circuit,简称:ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。
实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一可读取存储器中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储器(存储介质)包括:只读存储器(英文:read-only memory,缩写:ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文:magnetic tape)、软盘(英文:floppy disk)、光盘(英文:optical disc)及其任意组合。
Claims (30)
- 一种随机接入方法,其特征在于,所述方法包括:用户设备接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;所述用户设备在执行第一随机接入过程情况时,根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入。
- 根据权利要求1所述的方法,其特征在于,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则所述用户设备根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备再次发送随机接入前导信号进行随机接入。
- 根据权利要求1至3任一项所述的方法,其特征在于,所述根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入,包括:所述用户设备根据接收到的所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,向所述网络设备发送随机接入前导信号进行随机接入;或者,所述用户设备根据所述第一功率参数增加发射功率,并根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入;或者,所述用户设备根据接收所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,并根据所述第一功率参数增加发射功率,在等待所述退避时间之后根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入。
- 根据权利要求1至4任一项所述的方法,其特征在于,所述方法还包括:所述用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述用户设备根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到的功率爬坡步长增加后的发射功率,所述用户设备向所述网络设备发送随机接入前导信号进行随机接入。
- 一种随机接入方法,其特征在于,包括:用户设备接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少二种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;所述用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,根据接收到的BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入;或者,根据接收到的BI以及功率 爬坡步长向所述网络设备发送随机接入前导信号进行随机接入。
- 根据权利要求6所述的方法,其特征在于,所述根据接收到的BI以及功率爬坡步长向所述网络设备发送随机接入前导信号进行随机接入,包括:所述用户设备根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,向所述网络设备发送随机接入前导信号进行随机接入;或者,所述用户设备根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入;或者,所述用户设备根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率向所述网络设备发送随机接入前导信号进行随机接入。
- 根据权利要求6或7所述的方法,其特征在于,所述BI为执行所述第二随机接入过程情况时记录的BI。
- 一种随机接入方法,其特征在于,包括:网络设备针对不同的随机接入过程情况配置对应的退避指示BI调整参数和/或功率参数;所述网络设备发送随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数。
- 根据权利要求9所述的方法,其特征在于,功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
- 一种随机接入方法,其特征在于,包括:用户设备选择网络设备发送的第一同步信号块SSB,向网络设备发送随机接入前导信号;所述用户设备接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长;在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,所述用户设备根据所述第一退避指示BI和/或第一功率爬坡步长向所述网络设备再次发送随机接入前导信号进行随机接入。
- 根据权利要求11所述的方法,其特征在于,所述用户设备选择预先配置的第一同步信号块SSB向网络设备发送随机接入前导信号,包括:所述用户设备使用所述第一SSB对应的物理随机接入信道PRACH资源向所述网络设备发送所述随机接入前导信号。
- 根据权利要求11或12所述的方法,其特征在于,所述用户设备根据所述第一退避指示BI和/或第一功率爬坡步长向所述网络设备再次发送随机接入前导信号进行随机接入,包括:所述用户设备基于所述BI选择退避时间,并在等到所述退步时间之后,向所述网络设备再次发送随机接入前导信号进行随机接入;或者,所述用户设备基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率向所述网络设备再次发送随机接入前导信号进行随机接入;或者,所述用户设备基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所述退步时间之后根据增加后的发射功率向所述网络设备再次发送随机接入前导信号进行随机接入。
- 一种随机接入方法,其特征在于,包括:网络设备接收用户设备发送的随机接入前导信号,并识别出所述用户设备选择了第一同步信号块SSB;所述网络设备向所述用户设备返回随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长。
- 根据权利要求14所述的方法,其特征在于,所述网络设备接收用户设备通过第一同步信号块SSB发送的随机接入前导信号,包括:所述网络设备接收所述用户设备通过所述第一SSB对应的物理随机接入信道PRACH资源发送的所述随机接入前导信号。
- 根据权利要求14或15所述的方法,其特征在于,所述网络设备使用第一发送波束对应所述第一SSB。
- 一种用户设备,其特征在于,包括:接收模块,处理模块以及发送模块;所述接收模块用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;所述发送模块用于在所述处理模块执行第一随机接入过程情况时,根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,向所述网络设备发送随机接入前导信号进行随机接入。
- 根据权利要求17所述的用户设备,其特征在于,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
- 根据权利要求17所述的用户设备,其特征在于,所述接收模块还用于接收所述网络设备返回的随机接入响应消息;在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,则所述处理模块还用于根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
- 根据权利要求17至19任一项所述的用户设备,其特征在于,所述处理模块具体用于:根据接收到的所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;或者,根据所述第一功率参数增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;或者,根据接收所述BI以及所述第一BI调整参数设置退避参数,并根据所述退避参数选择退避时间,并根据所述第一功率参数增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
- 根据权利要求17至20任一项所述的用户设备,其特征在于,所述用户设备在执行第二随机接入过程情况,且所述随机接入配置信息中不包括所述第二随机接入过程情况对应的BI调整参数和/或功率参数时,所述处理模块还用于根据接收到的BI设置退避参数,基于所述退避参数选择退避时间,并在退避时间后,和/或,根据接收到的功率爬坡步长增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
- 一种用户设备,其特征在于,包括:接收模块,处理模块以及发送模块;所述接收模块用于接收网络设备发送的随机接入配置信息;所述随机接入配置信息包括至少二种随机接入过程情况对应的退避指示BI调整参数和/或功率参数;所述用户设备从执行第二随机接入过程情况改变为执行第一随机接入过程情况时,所述处理模块根据接收到的退避指示BI以及所述第一随机接入过程情况对应的第一BI调整参数和/或第一功率参数,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;或者,所述处理模块根据接收到的BI以及功率爬坡步长通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
- 根据权利要求22所述的用户设备,其特征在于,所述处理模块具体用于:根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,等待所述退避时间之后,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;或者,根据接收到的功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入;或者,根据接收到的所述BI设置退避参数,并根据所述退避参数选择退避时间,并根据接收到的功率爬坡步长增加发射功率,在等待所述退避时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备发送随机接入前导信号进行随机接入。
- 一种网络设备,其特征在于,包括:处理模块,用于针对不同的随机接入过程情况配置对应的退避指示BI调整参数和/或功率参数;发送模块,用于发送随机接入配置信息,所述随机接入配置信息包括至少一种随机接入过程情况对应的退避指示BI调整参数和/或功率参数。
- 根据权利要求24所述的网络设备,其特征在于,所述功率参数包括功率调整参数或者功率爬坡步长,所述功率调整参数或者所述功率爬坡步长用于增加发射功率。
- 一种用户设备,其特征在于,包括:发送模块,用于选择网络设备发送的第一同步信号块SSB,向网络设备发送随机接入前导信号;接收模块,用于接收所述网络设备返回的随机接入响应;所述随机接入响应包括所述 第一SSB对应的第一退避指示BI和/或第一功率爬坡步长;处理模块,用于在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,根据所述第一退避指示BI和/或第一功率爬坡步长通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
- 根据权利要求26所述的用户设备,其特征在于,所述发送模块具体用于使用所述第一SSB对应的PRACH资源向所述网络设备发送所述随机接入前导信号。
- 根据权利要求26或27所述的用户设备,其特征在于,所述处理模块具体用于:基于所述BI选择退避时间,并在等到所述退步时间之后,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入;或者,基于所述第一功率爬坡步长增加发射功率,并根据增加后的发射功率通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入;或者,基于所述BI选择退避时间,并基于所述第一功率爬坡步长增加发射功率,在等到所述退步时间之后根据增加后的发射功率,通过所述发送模块向所述网络设备再次发送随机接入前导信号进行随机接入。
- 一种网络设备,其特征在于,包括:接收模块,用于接收用户设备发送的随机接入前导信号,并识别出所述用户设备选择了第一同步信号块SSB;发送模块,用于向所述用户设备返回随机接入响应;所述随机接入响应包括所述第一SSB对应的第一退避指示BI和/或第一功率爬坡步长。
- 一种随机接入方法,其特征在于,包括:用户设备通过使用第一传输波束和/或第一随机接入资源向网络设备发送随机接入前导信号,所述随机接入前导信号用于发起随机接入过程;所述用户设备接收所述网络设备发送的退避指示器BI;所述用户设备根据所述BI设置退避参数;所述用户设备在随机接入响应消息接收被认为失败的情况下或冲突解决被认为失败的情况下,执行方案A、方案B以及方案C中的任一种:其中,方案A:若所述用户设备当前使用的波束为所述第一传输波束,或,所述用户设备当前使用第一随机接入资源,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后发生过改变,或,若所述用户设备的发送功率达到最大值,则所述第一用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程;方案B:若所述用户设备当前使用的波束为第二传输波束,或,所述用户设备当前使用第二随机接入资源,或,若所述用户设备的功率爬坡计数器在随机接入响应消息接收被认为失败或冲突解决被认为失败后没有发生过改变,或,若所述用户设备的功率爬坡计数器发生重置,则所述用户设备将所述退避参数设置为0;方案C:若所述用户设备的发送功率达到最大值并且所述用户设备当前使用的波束为第二传输波束,则所述用户设备基于所述退避参数选择一个随机退避时间,等待所述随机退避时间之后,所述用户设备再次向所述网络设备发起随机接入过程。
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